CN and Brainstem

Question 1

CN I

Answer 1

Olfactory

Question 2

CN II

Answer 2

Optic

Question 3

CN III

Answer 3

Oculomotor

Question 4

CN IV

Answer 4

Trochlear

Question 5

CN V

Answer 5

Trigeminal

Question 6

CN VI

Answer 6

Abducens

Question 7

CN VII

Answer 7

Facial

Question 8

CN VIII

Answer 8

Vestibulocochlear

Question 9

CN IX

Answer 9

Glossopharyngeal

Question 10

CN X

Answer 10

Vagus

Question 11

CN XI

Answer 11

Accessory

Question 12

CN XII

Answer 12

Hypoglossal

Question 13

CN that are extension of Telencephalon

Answer 13

Olfactory

Optic

Question 14

CN that exit from midbrain

Answer 14

Oculomotor

Trochlear

Question 15

CN that exit from pons

Answer 15

Trigeminal
Abducens
Facial
Vestibulocochlear

Question 16

CN that exit from medulla

Answer 16

Glossopharyngeal
Vagus
Accessory
Hypoglossal

Question 17

Receives information about deep/crude touch, pain and temperature from the ipsilateral face

Answer 17

Spinal Trigeminal Nucleus

Question 18

CNs that convey pain information from their areas to the spinal trigeminal nucleus

Answer 18

CNs VII, IX and X

Question 19

Receives information about discriminative sensation and light touch of the face as well as conscious propioception of the jaw via first order neurons

Answer 19

Principal Sensory Nucleus

Question 20

Involved with propioception of the face, that is, the feeling of position of the muscles

Answer 20

Mesencephalic Nucleus

Question 21

Contains no chemical synapses but are electrically coupled —> neurons of this nucleus are pseudounipolar cells receiving propioceptive information from the mandible, and sending projections to the motor trigeminal nucleus to mediate monosynaptic jaw jerk reflexes

Answer 21

Mesencephalic Nucleus

Question 22

The only structure in the CNS to contain the cell bodies of a primary afferent, which are usually contained within ganglia

Answer 22

Mesencephalic Nucleus

Question 23

Contains motor neurons that innervate muscles of the first branchial arch, namely the muscles of mastication, the tensor tympani, tensor veli palatini, mylohyoid, and anterior belly of the digastric

Answer 23

Trigeminal Motor Nucleus

Question 24

Muscles of mastication

Answer 24

–masseter
–temporalis
–medial pterygoid
–lateral pterygoid

•Others
–Tensor veli palatini
–mylohyoid
–anterior belly of digastric
–tensor tympani

Question 25

Controls the muscles of facial expression

Answer 25

Facial nerve

Question 26

Conveys taste sensations from the anterior two-thirds of the tongue and oral cavity

Answer 26

Facial nerve

Question 27

Supplies preganglionic parasympathetic fibers to several head and neck ganglia

Answer 27

Facial nerve

Question 28

Provides parasympathetic innervation to several glands, including the nasal, palatine, lacrimal and pharyngeal glands

Answer 28

Greater petrosal nerve

Question 29

Provides motor innervation for stapediusmuscle in middle ear

Answer 29

Nerve to stapedius

Question 30

Controls movements of some of the scalp muscles around the ear

Answer 30

Posterior auricular nerve

Question 31

Five major facial branches (in parotid gland)

Answer 31

temporal, zygomatic, buccal, marginal mandibular, cervical

Question 32

Aids in tasting, swallowing and salivary secretions. Its superior and inferior (petrous) ganglia contain the cell bodies of pain fibers

Answer 32

Glossopharyngeal Nerve

Question 33

CN IX Taste from the posterior one-third of the tongue and information from carotid baroreceptors and carotid body chemoreceptors

Answer 33

Solitary nucleus

Question 34

CN IX | Lower motor neurons for the stylopharyngeus muscle

Answer 34

Nucleus ambiguus

Question 35

CN IX | Somatic sensory fibers from the middle ear

Answer 35

Spinal nucleus of trigeminal nerve

Question 36

CN IX | Parasympathetic input to the parotid and mucus glands

Answer 36

Inferior salivatory nucleus

Question 37

Sends parasympathetic output to the viscera, especially the intestines

Answer 37

Dorsal nucleus of vagus

Question 38

CN X Gives rise to the branchial efferent motor fibers of the vagus nerve and preganglionic parasympathetic neurons that innervate the heart

Answer 38

Nucleus ambiguus

Question 39

CN X | Receives afferent taste information and primary afferents from visceral organs

Answer 39

Solitary nucleus

Question 40

CN X Receives information about deep/crude touch, pain, and temperature of the outer ear, the duraof the posterior cranial fossa and the mucosa of the larynx

Answer 40

Spinal trigeminal nucleus

Question 41

Provides motor innervation from the CNS to two muscles of the neck

Answer 41

Accessory Nerve | sternocleidomastoid and the trapezius muscles

Question 42

Muscle that ilts and rotates the head

Answer 42

Sternocleidomastoid muscle

Question 43

Elevates shoulder and adducts the scapula

Answer 43

Trapezius

Question 44

Supplies motor fibres to all of the muscles of the tongue, except the palatoglossus muscle

Answer 44

Hypoglossal Nerve