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IB 131 midterm 2 > 13.1 Peripheral nervous MEMORIZE SLIDES 54, 55, 75 > Flashcards

13.1 Peripheral nervous MEMORIZE SLIDES 54, 55, 75 Flashcards

1
Q

Special somatic senses

A

Hearing
Balance/equilibrium
Vision

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2
Q

Special visceral senses

A

Chemical:
Gustation
Olfaction

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3
Q

Visceral motor division

A

=Autonomic nervous system

Has parasympathetic and sympathetic

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4
Q

Somatic sensory

A

Special somatic senses:
hearing
balance
vision

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5
Q

Visceral sensory

A

Special visceral senses: chemical senses
Gustation
Olfaction

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6
Q

Sensory receptor according to location

Exteroreceptors

A

Near body surface

Stimulations outside of body

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7
Q

Sensory receptor according to location

Interoreceptors

A

Receive stimuli from internal viscera

Detect chemicals
Taste
Stretching of tissues
Temperature

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8
Q

Sensory receptor according to location

Proprioceptors

A

Located in skeletal muscles, tendons, joints, ligaments

Detect degree of stretch

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9
Q

Sensory receptor according to stimulus

Mechanoreceptors

A

Respond to touch, stretch, vibration, itch

Baroreceptors monitor blood pressure

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10
Q

Sensory receptor according to stimulus

Thermoreceptors

A

Respond to temperature changes
Capsaicin receptors
Menthol receptors

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11
Q

Sensory receptor according to stimulus

Chemoreceptors

A

Respond to chemicals in solution

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12
Q

Sensory receptor according to stimulus

Photoreceptors

A

In eyes

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13
Q

Sensory receptor according to stimulus

Nociopreceptors

A

Pain

Potentialy damaging stimuli

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14
Q

Sensory receptor according to structure

Uncapsulated with free nerve endings

A

Abundant in epithelia underlying connective tissue and other tissues
Respond to pain and temperature

MERKEL DISCS, epithelial tactile complexes: modified free nerve endings which consists of tactile epitheliel cell in basal layer of epidermis which is innervated by sensory nerve ending
Hair follicle receptors wrap around hair follicles

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15
Q

Sensory receptor according to structure

Encapsulated nerve endings

A

Capsule of connective tissue

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16
Q

Sensory receptor according to structure
Encapsulated nerve endings
Tactile (Meissner’s) copuscles

A

Dermal papillae for discriminative touch and low frequency vibration of fingetips, nipples, external genitalia

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17
Q

Sensory receptor according to structure
Encapsulated nerve endings
Lamellar (Pacinian) corpuscles

A

Hypodermis, dermis, tendons, ligaments, joint capsules, periostea for deep pressure, stretch and high frequency vibration

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18
Q 
Sensory receptor according to structure
Encapsulated nerve endings
Bublbous corpuscles (Ruffini endings)
A

Deep dermis, hypodermis, joint capsules -> pressure and stretch

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19
Q

Sensory receptor according to structure
Encapsulated nerve endings
Proprioceptors

A

Monitor stretch of locomotor organs

20
Q

Propioceptors

Muscle spindles

A

Measure changing length of muscle
Embeded in perimysium between fascicles
Modified skeletal muscles, intrafusal muscle fibers, innervated by sensory fibers

21
Q

Propioceptors

Tendon organs

A

Monitor tension with tendons

22
Q

Propioceptors

Joint kinesthetic receptors

A

Sensory nerve endings within joint capsules

23
Q

Cranial neves

A

Pass through foramina of skull
Numbered I-X!!
Vagus nerve is only cranial nerve that extends to abdomen

24
Q

Cranial nerve nuclei locations

A 
Forebrain: I, II
Midbrain: III, IV
Pons: V, VI, VII
Medulla: VIII, IX, X, XII
Spinal cord: XI accessory nerves formed from ventral rootlets of spinal cord
25
Medulla | CN VIII
Vestibuloicochlear nerve | Associated brain nuclei are sensory vestibular nuclear complex and sensory cochlear nuclei
26
Medulla | CN IX
Glossopharyngeal nerve | Associated nuclei are nucleus ambiguus (motor) and solitary nucleus (sensory)
27
Medulla | CN X
Vagus nerve | Associated brain nuclei are dorsal motor nucleus of vagus, nucleus ambiguous and solitary nucleus (sensory)
28
Medulla | CN XII
Hypoglassal nerve | Associated brain nucleus is hypoglossal nucleus (motor)
29
Pons | CN V
Trigeminal nerve: trigeminal motor nucleus and trigeminal sensory nucleus
30
Pons | CN VI
Abducens nerve
31
Pons | CN VII
Facial nerve: facial nerve nucleus is motor and nervus intermedius is sensory
32
Midbrain | Periaqueductal gray matter
Most ventral part of periaqueductal gray matter contains motor neuron cell bodies to CN III (oculomotor) nuclei and CN IV (trochlear) nuclei CN IV is only CN that emerges from dorsal bainstem; it emerges just caudal to inferior colliculus
33
Primarily or exclusively sensory nerves I, II, III
Special sensory fibers for smell (I), vision (II), and hearing and equilibrium (VIII)
34
Exclusively motor nerves: III, IV, VI, XI, XII
Contain somatic motor fibers for skeletal muscles of eye (III, IV, VI), neck (XI), and tongue (XII)
35
Mixed motor/sensory nerves
V: chewing muscles VII: facial expression muscles IX X
36
CN I
Olfactory nerve | CN I is sensory nerve for smell that runs through cribiform plate of ethmoid bone
37
CN II
Optic nerve runs through optic canal of orbit
38
CN III
The oculomotor nerve innervates four of the extrinsic eye muscles: inferior oblique, superior rectus, inferior rectus & medial rectus Runs through superior orbital fissure
39
CN IV
Trochlear nerve innervate superior oblique muscle (extrinsic eye muscle) runs through superior orbital fissure
40
CN V
Trigeminal nerves Largest of cranial nerves Chewing! Opthalamic division V1: through superior orbital fissure Maxiallary division V2: through foramen rotundum Mandibular division V3: through formanen ovale Cell bodies of sensory neurons located in trigeminal ganglion Mandibular division contains motor fibers that innervate chewing
41
CN VI
Abducens nerves Abducts the eyeball by innervation of lateral rectus muscle runs through superior orbital fissure
42
CN VII
Facial nerves facial expression Enters temporal bone via inernal acoustic meatus Chordi tympani branch (taste) runs through stylomastoid foramen
43
CN VIII
Vestibulocochlear nerves Hearing balance Passes through internal acoustic meatus and enters into inner ear of temporal bone
44
CN IX
Glossopharyngeal nerves Innervates tongue and pharynx Runs through jugular foramen
45
CN X
``` Vagus nerve Mixed sensory and motor nerve Through jugular formane Extends into thorax and abdomen Parasympathetic innervation of organs ```
46
CN XI
Accessory nerves Fromed from ventral nerves are formed from ventral rootlets of spinal cord C1-C5 so has features of both cranial and spinal nerves Does not arise from brain stem Enters skull as accessory nerve through foramen magnum and exits through jugular formaen and innervate trapezius and sternocleidomastoid
47
CN XII
Innervates tongue muscles Runs through hypoglossal canal Inferior to tongue

IB 131 midterm 2 (6 decks)

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