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Anatomy_ Nerve Tables Flashcards

1
Q

CN I Olfactory Nerves: Sensory function (VS)

A

special visceral sensory, sense of smell

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2
Q

CN I Olfactory Nerves: Origin

A

Olfactory receptor cells (bipolar neurons) in the olfactory epithelium of the nasal cavity

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3
Q

CN II Optic nerves: sensory function (SS)

A

special somatic sensory, vision

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4
Q

CN II Optic nerves: origin

A

retina of the eye

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5
Q

CN II Optic nerves: pathway

A

pass through the optic canal of the sphenoid bone. optic nerves converge to form the optic chiasa, where fibers partially cross over, then contiue as the optic tracts to synapse in the thalamus. thalamic fibers porject to and terminate in the primary visual cortex in the occipital lobe

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6
Q

CN III Oculocomotor nerves: somatic motor function (SM)

A

innervate four extrinsic eye muscles that direct the eyeball: superior rectus, medial rectus, inferior rectus, inferior oblique muscles

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7
Q

CN III Oculocomotor nerves: visceral motor function (VM) (parasympathetic)

A

constrictor muscles of the iris constrict the pupil.<br></br>ciliary muscle alters lens shape for near vision.

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8
Q

CN III Oculocomotor nerves: origin

A

oculomotor nuclei in the ventral midbrain

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9
Q

CN III Oculocomotor nerves: pathway

A

pass through the superior orbital fissue to enter the orbit. parasympathetic fibers from the brain stem synapse in the ciliary ganglion with post ganglionic neurons that innervate the iris and ciliary muscle.

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10
Q

CN IV Trochlear nerves: somatic motor function (SM)

A

innervate the superior oblique muscle. this muscle passes through a ligamentous pully at the roof of the orbit, the trochlea, from which its name is derived.<br></br>afferent proprioceptor fibers return from the superior oblique.

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11
Q

CN IV Trochlear nerves: origin

A

trochlear nuclei in the dorsal midbrain

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12
Q

CN IV Trochlear nerves: pathway

A

pass ventrally around the midbrain; pass through the superior orbital fissure to enter the orbit

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13
Q

CN V Trigeminal nerves: overview

A

the large trigemenal nerve forms three divisions (trigeminal=threefold): opthalmic (V1), maxillary (V2), and mandibular (V3) divisions.<br></br>this mixed nerve is the general somatic sensory nerve of the face for touch, temperature, and pain. the mandibular division supplies somatic motor innervation to the chewing muscles.

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14
Q

CN V Trigeminal nerves: sensory function (SS)

A

V1 General somatic sensation from skin of anterior scalp and forehead, upper eyelid and nose, nasal cavity mucosa, cornea, and lacrimal gland.<br></br>V2 General somatic sensation from skin of cheek, upper lip, and lower eyelid, nasal cavity mucosa, palate, upper teeth.<br></br>V3 General somatic sensation from skin of chin and temporal region of scalp, anterior tongue and lower teeth.

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15
Q

CN V Trigeminal nerves: somatic motor function (SM)

A

V3 Innervate the muscles of mastication: temporalis, masseter, pterygoids, anterior belly of digastric<br></br>Afferent proprioceptor fibers return from these muscles

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16
Q

CN V Trigeminal nerves: origin

A

sensory receptors in skin and mucosa of face<br></br>motor fibers from trigeminal motor nucleus in pons

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17
Q

CN V Trigeminal nerves: pathway

A

Through the skull<br></br>V1 Superior orbital fissure<br></br>V2 Foramen rotundum<br></br>V3 Foramen ovale; mandibular foramen<br></br>Cutaneous Branch<br></br>V1 Supraorbital foramen<br></br>V2 Infraorbital foramen<br></br>V3 Mental foramen<br></br>Cell bodies of sensory neurons of all three divisions located in the large trigeminal ganlion. fibers extend to trigeminal nuclei in the pons

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18
Q

CN VI Abducens nerves: somatic motor function (SM)

A

innervate the lateral rectus muscle. this muscle abducts the eye.<br></br>afferent proprioceptor fibers return from the lateral rectus.

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19
Q

CN VI Abducens nerves: origin

A

abducens nuclei in the inferior pons

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20
Q

CN VI Abducens nerves: pathway

A

pass through the superior orbital fissure to enter the orbit

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21
Q

CN VII Facial nerves: sensory function (VS, SS)

A

special visceral sensory from taste buds on anterior two-thirds of tongue<br></br>general somatic sensory from small patch of skin on the ear

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22
Q

CN VII Facial nerves: somatic motor function (SM)

A

five major branches on face: temporal, zygomatic, buccal, mandibular, and cervical, to innervate the facial muscles. also innervates the posterior belly of digastric.<br></br>afferent proprioceptor fibers return from these muscles

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23
Q

CN VII Facial nerves: visceral motor function (VM) (parasympathetic)

A

innervate the lacrimal (tear) glands, nasal and palantine glands, and the submandibular and sublingual salivary glands

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24
Q

CN VII Facial nerves: origin

A

fibers emerge from the pons, just lateral to abducens

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25
Q

CN VII Facial nerves: pathway

A

fibers enter the temporal bone via the internal acoustic meatus. chorda tympani branches off to innervate the two salivary glands and tongue. branch to facial muscle emerges from the temporal bone through the stylomastoid foramen and courses to lateral aspect of face.<br></br>cell bodies of sensory neurons are in geniculate ganglion.<br></br>cell bodies of postganglionic parasympathetic neurons are in pterygopalantine and submandibular ganglia on the trigeminal nerve.

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26
Q

CN VIII Vestibulocochlear nerves: sensory function (SS)

A

vestibular branch: special somatic sensory, equilibrium<br></br>cochlear branch: special somatic sensory, hearing<br></br>small motor component adjusts the sensitivity of the sensory receptors

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27
Q

CN VIII Vestibulocochlear nerves: erigin

A

sensory receptors in the inner ear for hearing (within the cochlea) and for equlibrium (within the semicircular canals and vestibule)

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28
Q

CN VIII Vestibulocochlear nerves: pathway

A

from the inner ear cavity within the temporal bone, fibers pass through the internal acoustic meatus, merge to form the vestibulocochlear nerve and enter the brain stem at the pons.<br></br>sensory nerve cell bodies for vestibular branch located in vestibular ganglia; for the cochlear branch, in the spiral ganglia within the cochlea

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29
Q

CN IX Glossopharyngeal nerves: sensory function (VS, SS)

A

special visceral sensory from taste buds on posterior third of tongue.<br></br>general visceral sensory from posterior third of tongue, pharyngeal mucosa, chemoreceptors in the coratid body (which monitor O2 and CO2 in the blood and regulate respiratory rate and depth), and baroreceptors of carotid sinus (regulate blood pressure).<br></br>general somatic sensory from small area of skin on external ear.

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30
Q

CN IX Glossopharyngeal nerves: somatic motor function (SM)

A

innervate a pharyngeal muscle, stylopharyngeus, which elevates the pharynx during swallowing.<br></br>afferet proprioceptor fibers return from this muscle.

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31
Q

CN IX Glossopharyngeal nerves: visceral motor function (VM) (parasympathetic)

A

innervate the parotid salivary gland

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32
Q

CN IX Glossopharyngeal nerves: origin

A

fibers emerge from the medulla oblongata

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33
Q

CN IX Glossopharyngeal nerves: pathway

A

fibers pass through the jugular foramen and travel to the pharynx.<br></br>cell bodies of sensory neurons are located in the superior and inferior ganglia. cell bodies of postganglionic parasympathic neurons are in otic ganglion on the trigeminal nerve.

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34
Q

CN X Vagus nerves: overview

A

mixed nerve; major function is parasympathic innervation to the thoracic and abdominal viscera

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35
Q

CN X Vagus nerves: sensory function (VS, SS)

A

general visceral sensory from the thoracic and abdominal viscera, mucosa of larynx and pharynx, coratid sinus (baroreceptor for blood pressure), and carotid and aortic bodies (chemoreceptors for respiration).<br></br>special visceral sensory from taste buds on the epiglottis.<br></br>general somatic sensory from small area of skin on external ear.

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36
Q

CN X Vagus nerves: somatic motor function (SM)

A

innervates skeletal muscles of the pharynx and larynx involved in swallowing and vocalization.<br></br>afferent proprioceptor fibers return from the muscles of the larynx and pharynx

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37
Q

CN X Vagus nerves: visceral motor function (VM) (parasympathetic)

A

innervates the heart, lungs, and abdominal viscera through the transverse colon. Regulates heart rate, breathing, and digestive system activity.

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38
Q

CN X Vagus nerves: origin

A

fibers emerge from medulla ablongata

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39
Q

CN X Vagus nerves: pathway

A

fibers exit the skull through the jugular foramen and descend through the neck into the thorax and abdomen

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40
Q

CN XI Accessory nerves: somatic motor function (SM)

A

innervate the trapezius and sternocleidomastoid muscles that move the head and neck.<br></br>afferent proprioceptor fibers return from these muscles

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41
Q

CN XI Accessory nerves: origin

A

forms from ventral rootlets arising from C1-C5 of the spinal cord. long considered to have both a cranial and spinal portion, the cranial rootlets have been shown to be part of the vagus nerves

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42
Q

CN XI Accessory nerves: pathway

A

upon emerging from the spinal corcd, spinal rootlets merge to form the accessory nerves, pass into the skull through the foramen magnum, and then exit the skull through the jugular foramen

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43
Q

CN XII Hypoglossal nerves: somatic motor function (SM)

A

innervate the intrinsic and extrinsic muscles of the tongue. aid tongue movements during feeding, swallowing, and speech.<br></br>afferent proprioceptor fibers return from these muscles.

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44
Q

CN XII Hypoglossal nerves: origin

A

from a series of roots from the hypoglossal nuclei in the ventral medulla oblongata

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45
Q

CN XII Hypoglossal nerves: pathway

A

exit the skull through the hypoglossal canal and travel to the tongue

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46
Q

branches of the cervical plexus, cutaneous branches (superficial): lesser occiptal

A

ventral rami: C2, C3<br></br>structures innervated: skin on pesterolateral aspect of neck

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47
Q

branches of the cervical plexus, cutaneous branches (superficial):greater auricular

A

ventral rami: C2, C3<br></br>structures innervated: skin of ear, skin over parotic gland

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48
Q

branches of the cervical plexus, cutaneous branches (superficial):transverse cervical

A

ventral rami: C2, C3<br></br>structures innervated: skin on anterior and lateral aspect of neck

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49
Q

branches of the cervical plexus, cutaneous branches (superficial): supraclavicular (anterior, middle, and posterior)

A

ventral rami: C3, C4<br></br>structures innervated: skin of shoulder and clavicular region

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50
Q

branches of the cervical plexus, motor branches (deep): arisa cervicalis (superior and inferior roots)

A

ventral rami: C1-C3<br></br>structures innervated: infrahyoid muscles of neck (omohyoid, sternohyoid, and sternothyroid)

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51
Q

branches of the cervical plexus, motor branches (deep): segmental and other muscular branches

A

ventral rami: C1-C5<br></br>structures innervated: deep muscles of neck (geniohyoid and thyrohyoid) and portions of scalenes, levator scapulae, trapezius, and sternocleidomastoid muscles

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52
Q

branches of the cervical plexus, motor branches (deep): phrenic

A

ventral rami: C3-C5<br></br>structures innervated: diaphragm (sole motor nerve supply)

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53
Q

branches of the bracial plexus to trunk and shoulder muscles: dorsal scapular

A

corld and spinal roots (ventral rami): branches of C5 rami<br></br>structures innervated: rhomboid muscles and levator scapulae

54
Q

branches of the bracial plexus to trunk and shoulder muscles: long thoracic

A

cord ad spinal roots (ventral rami): branches of C5-C7 rami<br></br>structures innervated: serratus anterior muscle

55
Q

branches of the bracial plexus to trunk and shoulder muscles: subscapular

A

cord and spinal roots (ventral rami): posterior cord; branches of C5 and C6 rami<br></br>structures innervated: teres major and subscapularis muscles

56
Q

branches of the bracial plexus to trunk and shoulder muscles: thoracodorsal

A

cord and spinal roots (ventral rami): posterior cord; branches of C6-C8 rami<br></br>structures innervated: latissimus dorsi

57
Q

branches of the bracial plexus to trunk and shoulder muscles: suprascapular

A

cord and spinal roots (ventral rami): upper trunk (C5, C6)<br></br>structures innervated: shoulder joint; supraspinatus and infraspinatus muscles

58
Q

branches of the bracial plexus to trunk and shoulder muscles: pectoral (lateral and medial)

A

cord and spinal roots (ventral rami): branches of lateral and medial cords (C5-T1)<br></br>structures innervated: pectoralis major and minor muscles

59
Q

branches of the lumbar plexus: iliohypogastric

A

ventral rami: L1<br></br>structures innervated: skin on side of bottock and skin on pubis; proprioceptor and motor to the most inferior parts of the internal oblique and transversus abdominis muscles

60
Q

branches of the lumbar plexus: ilioinguinal

A

ventral rami: L1<br></br>structures innervated: skin of external genitalia and proximal medial aspect of the thigh

61
Q

branches of the lumbar plexus: genitofemoral

A

ventral rami: L1, L2<br></br>structures innervated: motor to internal oblique and transversus abdominis muscles. skin of scrotum in males, of labia majora in females, and of anterior thigh inferior to middle portion of inguinal region; cremaster muscle in males

62
Q

branches of the lumbar plexus: lateral femoral cutaneous

A

ventral rami: L2-L3<br></br>structures innervated: skin of lateral thigh; some sensory branches to peritoneum

63
Q

additional branches of the sacral plexus: superior gluteal

A

ventral rami: L4, L5, S1<br></br>structures innervated: motor branches to gluteus medius and minimus and tensor fasciae latae

64
Q

additional branches of the sacral plexus: inferior gluteal

A

ventral rami: L5-S2<br></br>structures innervated: motor branches to gluteus maximus

65
Q

additional branches of the sacral plexus: posterior femoral cutaneous

A

ventral rami: S1-S3<br></br>structures innervated: skin of most inferior part of buttock, posterior thigh, and popliteal region; length variable; may also innervate part of skin of calf and heel

66
Q

additional branches of the sacral plexus: pudendal

A

ventral rami: S2-S4<br></br>structures innervated: supplies most of skin and muscles of perineum (region encompassing external genitalia and anus and including clitoris, labia, and vaginal mucose in female, and scrotum and penis in males); external anal sphincter

67
Q

special visceral sensory, sense of smell

A

CN I Olfactory Nerves: Sensory function (VS)

68
Q

Olfactory receptor cells (bipolar neurons) in the olfactory epithelium of the nasal cavity

A

CN I Olfactory Nerves: Origin

69
Q

special somatic sensory, vision

A

CN II Optic nerves: sensory function (SS)

70
Q

retina of the eye

A

CN II Optic nerves: origin

71
Q

pass through the optic canal of the sphenoid bone. optic nerves converge to form the optic chiasa, where fibers partially cross over, then contiue as the optic tracts to synapse in the thalamus. thalamic fibers porject to and terminate in the primary visual cortex in the occipital lobe

A

CN II Optic nerves: pathway

72
Q

innervate four extrinsic eye muscles that direct the eyeball: superior rectus, medial rectus, inferior rectus, inferior oblique muscles

A

CN III Oculocomotor nerves: somatic motor function (SM)

73
Q

constrictor muscles of the iris constrict the pupil.<br></br>ciliary muscle alters lens shape for near vision.

A

CN III Oculocomotor nerves: visceral motor function (VM) (parasympathetic)

74
Q

oculomotor nuclei in the ventral midbrain

A

CN III Oculocomotor nerves: origin

75
Q

pass through the superior orbital fissue to enter the orbit. parasympathetic fibers from the brain stem synapse in the ciliary ganglion with post ganglionic neurons that innervate the iris and ciliary muscle.

A

CN III Oculocomotor nerves: pathway

76
Q

innervate the superior oblique muscle. this muscle passes through a ligamentous pully at the roof of the orbit, the trochlea, from which its name is derived.<br></br>afferent proprioceptor fibers return from the superior oblique.

A

CN IV Trochlear nerves: somatic motor function (SM)

77
Q

trochlear nuclei in the dorsal midbrain

A

CN IV Trochlear nerves: origin

78
Q

pass ventrally around the midbrain; pass through the superior orbital fissure to enter the orbit

A

CN IV Trochlear nerves: pathway

79
Q

the large trigemenal nerve forms three divisions (trigeminal=threefold): opthalmic (V1), maxillary (V2), and mandibular (V3) divisions.<br></br>this mixed nerve is the general somatic sensory nerve of the face for touch, temperature, and pain. the mandibular division supplies somatic motor innervation to the chewing muscles.

A

CN V Trigeminal nerves: overview

80
Q

V1 General somatic sensation from skin of anterior scalp and forehead, upper eyelid and nose, nasal cavity mucosa, cornea, and lacrimal gland.<br></br>V2 General somatic sensation from skin of cheek, upper lip, and lower eyelid, nasal cavity mucosa, palate, upper teeth.<br></br>V3 General somatic sensation from skin of chin and temporal region of scalp, anterior tongue and lower teeth.

A

CN V Trigeminal nerves: sensory function (SS)

81
Q

V3 Innervate the muscles of mastication: temporalis, masseter, pterygoids, anterior belly of digastric<br></br>Afferent proprioceptor fibers return from these muscles

A

CN V Trigeminal nerves: somatic motor function (SM)

82
Q

sensory receptors in skin and mucosa of face<br></br>motor fibers from trigeminal motor nucleus in pons

A

CN V Trigeminal nerves: origin

83
Q

Through the skull<br></br>V1 Superior orbital fissure<br></br>V2 Foramen rotundum<br></br>V3 Foramen ovale; mandibular foramen<br></br>Cutaneous Branch<br></br>V1 Supraorbital foramen<br></br>V2 Infraorbital foramen<br></br>V3 Mental foramen<br></br>Cell bodies of sensory neurons of all three divisions located in the large trigeminal ganlion. fibers extend to trigeminal nuclei in the pons

A

CN V Trigeminal nerves: pathway

84
Q

innervate the lateral rectus muscle. this muscle abducts the eye.<br></br>afferent proprioceptor fibers return from the lateral rectus.

A

CN VI Abducens nerves: somatic motor function (SM)

85
Q

abducens nuclei in the inferior pons

A

CN VI Abducens nerves: origin

86
Q

pass through the superior orbital fissure to enter the orbit

A

CN VI Abducens nerves: pathway

87
Q

special visceral sensory from taste buds on anterior two-thirds of tongue<br></br>general somatic sensory from small patch of skin on the ear

A

CN VII Facial nerves: sensory function (VS, SS)

88
Q

five major branches on face: temporal, zygomatic, buccal, mandibular, and cervical, to innervate the facial muscles. also innervates the posterior belly of digastric.<br></br>afferent proprioceptor fibers return from these muscles

A

CN VII Facial nerves: somatic motor function (SM)

89
Q

innervate the lacrimal (tear) glands, nasal and palantine glands, and the submandibular and sublingual salivary glands

A

CN VII Facial nerves: visceral motor function (VM) (parasympathetic)

90
Q

fibers emerge from the pons, just lateral to abducens

A

CN VII Facial nerves: origin

91
Q

fibers enter the temporal bone via the internal acoustic meatus. chorda tympani branches off to innervate the two salivary glands and tongue. branch to facial muscle emerges from the temporal bone through the stylomastoid foramen and courses to lateral aspect of face.<br></br>cell bodies of sensory neurons are in geniculate ganglion.<br></br>cell bodies of postganglionic parasympathetic neurons are in pterygopalantine and submandibular ganglia on the trigeminal nerve.

A

CN VII Facial nerves: pathway

92
Q

vestibular branch: special somatic sensory, equilibrium<br></br>cochlear branch: special somatic sensory, hearing<br></br>small motor component adjusts the sensitivity of the sensory receptors

A

CN VIII Vestibulocochlear nerves: sensory function (SS)

93
Q

sensory receptors in the inner ear for hearing (within the cochlea) and for equlibrium (within the semicircular canals and vestibule)

A

CN VIII Vestibulocochlear nerves: erigin

94
Q

from the inner ear cavity within the temporal bone, fibers pass through the internal acoustic meatus, merge to form the vestibulocochlear nerve and enter the brain stem at the pons.<br></br>sensory nerve cell bodies for vestibular branch located in vestibular ganglia; for the cochlear branch, in the spiral ganglia within the cochlea

A

CN VIII Vestibulocochlear nerves: pathway

95
Q

special visceral sensory from taste buds on posterior third of tongue.<br></br>general visceral sensory from posterior third of tongue, pharyngeal mucosa, chemoreceptors in the coratid body (which monitor O2 and CO2 in the blood and regulate respiratory rate and depth), and baroreceptors of carotid sinus (regulate blood pressure).<br></br>general somatic sensory from small area of skin on external ear.

A

CN IX Glossopharyngeal nerves: sensory function (VS, SS)

96
Q

innervate a pharyngeal muscle, stylopharyngeus, which elevates the pharynx during swallowing.<br></br>afferet proprioceptor fibers return from this muscle.

A

CN IX Glossopharyngeal nerves: somatic motor function (SM)

97
Q

innervate the parotid salivary gland

A

CN IX Glossopharyngeal nerves: visceral motor function (VM) (parasympathetic)

98
Q

fibers emerge from the medulla oblongata

A

CN IX Glossopharyngeal nerves: origin

99
Q

fibers pass through the jugular foramen and travel to the pharynx.<br></br>cell bodies of sensory neurons are located in the superior and inferior ganglia. cell bodies of postganglionic parasympathic neurons are in otic ganglion on the trigeminal nerve.

A

CN IX Glossopharyngeal nerves: pathway

100
Q

mixed nerve; major function is parasympathic innervation to the thoracic and abdominal viscera

A

CN X Vagus nerves: overview

101
Q

general visceral sensory from the thoracic and abdominal viscera, mucosa of larynx and pharynx, coratid sinus (baroreceptor for blood pressure), and carotid and aortic bodies (chemoreceptors for respiration).<br></br>special visceral sensory from taste buds on the epiglottis.<br></br>general somatic sensory from small area of skin on external ear.

A

CN X Vagus nerves: sensory function (VS, SS)

102
Q

innervates skeletal muscles of the pharynx and larynx involved in swallowing and vocalization.<br></br>afferent proprioceptor fibers return from the muscles of the larynx and pharynx

A

CN X Vagus nerves: somatic motor function (SM)

103
Q

innervates the heart, lungs, and abdominal viscera through the transverse colon. Regulates heart rate, breathing, and digestive system activity.

A

CN X Vagus nerves: visceral motor function (VM) (parasympathetic)

104
Q

fibers emerge from medulla ablongata

A

CN X Vagus nerves: origin

105
Q

fibers exit the skull through the jugular foramen and descend through the neck into the thorax and abdomen

A

CN X Vagus nerves: pathway

106
Q

innervate the trapezius and sternocleidomastoid muscles that move the head and neck.<br></br>afferent proprioceptor fibers return from these muscles

A

CN XI Accessory nerves: somatic motor function (SM)

107
Q

forms from ventral rootlets arising from C1-C5 of the spinal cord. long considered to have both a cranial and spinal portion, the cranial rootlets have been shown to be part of the vagus nerves

A

CN XI Accessory nerves: origin

108
Q

upon emerging from the spinal corcd, spinal rootlets merge to form the accessory nerves, pass into the skull through the foramen magnum, and then exit the skull through the jugular foramen

A

CN XI Accessory nerves: pathway

109
Q

innervate the intrinsic and extrinsic muscles of the tongue. aid tongue movements during feeding, swallowing, and speech.<br></br>afferent proprioceptor fibers return from these muscles.

A

CN XII Hypoglossal nerves: somatic motor function (SM)

110
Q

from a series of roots from the hypoglossal nuclei in the ventral medulla oblongata

A

CN XII Hypoglossal nerves: origin

111
Q

exit the skull through the hypoglossal canal and travel to the tongue

A

CN XII Hypoglossal nerves: pathway

112
Q

ventral rami: C2, C3<br></br>structures innervated: skin on pesterolateral aspect of neck

A

branches of the cervical plexus, cutaneous branches (superficial): lesser occiptal

113
Q

ventral rami: C2, C3<br></br>structures innervated: skin of ear, skin over parotic gland

A

branches of the cervical plexus, cutaneous branches (superficial):greater auricular

114
Q

ventral rami: C2, C3<br></br>structures innervated: skin on anterior and lateral aspect of neck

A

branches of the cervical plexus, cutaneous branches (superficial):transverse cervical

115
Q

ventral rami: C3, C4<br></br>structures innervated: skin of shoulder and clavicular region

A

branches of the cervical plexus, cutaneous branches (superficial): supraclavicular (anterior, middle, and posterior)

116
Q

ventral rami: C1-C3<br></br>structures innervated: infrahyoid muscles of neck (omohyoid, sternohyoid, and sternothyroid)

A

branches of the cervical plexus, motor branches (deep): arisa cervicalis (superior and inferior roots)

117
Q

ventral rami: C1-C5<br></br>structures innervated: deep muscles of neck (geniohyoid and thyrohyoid) and portions of scalenes, levator scapulae, trapezius, and sternocleidomastoid muscles

A

branches of the cervical plexus, motor branches (deep): segmental and other muscular branches

118
Q

ventral rami: C3-C5<br></br>structures innervated: diaphragm (sole motor nerve supply)

A

branches of the cervical plexus, motor branches (deep): phrenic

119
Q

corld and spinal roots (ventral rami): branches of C5 rami<br></br>structures innervated: rhomboid muscles and levator scapulae

A

branches of the bracial plexus to trunk and shoulder muscles: dorsal scapular

120
Q

cord ad spinal roots (ventral rami): branches of C5-C7 rami<br></br>structures innervated: serratus anterior muscle

A

branches of the bracial plexus to trunk and shoulder muscles: long thoracic

121
Q

cord and spinal roots (ventral rami): posterior cord; branches of C5 and C6 rami<br></br>structures innervated: teres major and subscapularis muscles

A

branches of the bracial plexus to trunk and shoulder muscles: subscapular

122
Q

cord and spinal roots (ventral rami): posterior cord; branches of C6-C8 rami<br></br>structures innervated: latissimus dorsi

A

branches of the bracial plexus to trunk and shoulder muscles: thoracodorsal

123
Q

cord and spinal roots (ventral rami): upper trunk (C5, C6)<br></br>structures innervated: shoulder joint; supraspinatus and infraspinatus muscles

A

branches of the bracial plexus to trunk and shoulder muscles: suprascapular

124
Q

cord and spinal roots (ventral rami): branches of lateral and medial cords (C5-T1)<br></br>structures innervated: pectoralis major and minor muscles

A

branches of the bracial plexus to trunk and shoulder muscles: pectoral (lateral and medial)

125
Q

ventral rami: L1<br></br>structures innervated: skin on side of bottock and skin on pubis; proprioceptor and motor to the most inferior parts of the internal oblique and transversus abdominis muscles

A

branches of the lumbar plexus: iliohypogastric

126
Q

ventral rami: L1<br></br>structures innervated: skin of external genitalia and proximal medial aspect of the thigh

A

branches of the lumbar plexus: ilioinguinal

127
Q

ventral rami: L1, L2<br></br>structures innervated: motor to internal oblique and transversus abdominis muscles. skin of scrotum in males, of labia majora in females, and of anterior thigh inferior to middle portion of inguinal region; cremaster muscle in males

A

branches of the lumbar plexus: genitofemoral

128
Q

ventral rami: L2-L3<br></br>structures innervated: skin of lateral thigh; some sensory branches to peritoneum

A

branches of the lumbar plexus: lateral femoral cutaneous

129
Q

ventral rami: L4, L5, S1<br></br>structures innervated: motor branches to gluteus medius and minimus and tensor fasciae latae

A

additional branches of the sacral plexus: superior gluteal

130
Q

ventral rami: L5-S2<br></br>structures innervated: motor branches to gluteus maximus

A

additional branches of the sacral plexus: inferior gluteal

131
Q

ventral rami: S1-S3<br></br>structures innervated: skin of most inferior part of buttock, posterior thigh, and popliteal region; length variable; may also innervate part of skin of calf and heel

A

additional branches of the sacral plexus: posterior femoral cutaneous

132
Q

ventral rami: S2-S4<br></br>structures innervated: supplies most of skin and muscles of perineum (region encompassing external genitalia and anus and including clitoris, labia, and vaginal mucose in female, and scrotum and penis in males); external anal sphincter

A

additional branches of the sacral plexus: pudendal

Anatomy (42 decks)

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