cranial nerves

Question 1

all ___ are innervated by corticobulbar tracts

Answer 1

cranial nerves

Question 2

efferent portions of cranial nerves have their cell bodies in ___

Answer 2

nuclei of the brainstem

Question 3

afferent portions of cranial nerves have their cell bodies in ___

Answer 3

ganglia outside of the brainstem

Question 4

in CN V, the function of the opthalmic nerve is to ___

Answer 4

provide sensory information of the forehead, eyes, nose

Question 5

in CN V, the function of the maxillary nerve is to ___

Answer 5

provide sensory information of the upper lip mucosa, maxilla, upper teeth, cheeks, maxillary sinuses, palate

Question 6

in CN V, the function of the mandibular nerve is to ___

Answer 6

provide sensory information of the anterior portion of the tongue, mandible, lower teeth, external ear

Question 7

in CN X, the ___ provides motor innervation to the laryngeal muscles and sensation of the vocal folds

Answer 7

recurrent laryngeal branch

Question 8

in CN X, the function of the internal superior laryngeal nerve is to ___

Answer 8

provide sensory information of the mucous membrane, epiglottis, base of the tongue

Question 9

in CN X, the function of the external superior laryngeal nerve is to ___

Answer 9

provide motor innervation to the cricothyroid muscles

Question 10

in CN X, the ___ provides mixed innervation to / of the muscles of the pharynx and the soft palate

Answer 10

pharyngeal branch

Question 11

list the CNs with mixed innervation

Answer 11

trigeminal V, facial VII, glossopharyngeal IX, vagus X

Question 12

true or false: the hypoglossal nerve has mixed innervation

Answer 12

false, it only has motor innervation

Question 13

sensory nuclei of CN V is in the trigeminal sensory nuclei, whereas sensory nuclei of CN VII is in the ___

Answer 13

geniculate ganglion

Question 14

motor nuclei of CN V is in the ___, whereas motor nuclei of CN VII is in the facial motor nucleus

Answer 14

trigeminal motor nuclei

Question 15

which CNs have their brainstem location in the pons?

Answer 15

trigeminal V and facial VII

Question 16

which CNs have their brainstem location in the medulla?

Answer 16

glossopharyngeal IX, vagus X, and hypoglossal XII

Question 17

this CN innervates the opening and closing of the jaw (masseter, temporal is, medial pterygoid, lateral pterygoid, anterior belly of diagastric, mylohyoid, tensor veil tympani, tensor tympani)

Answer 17

trigeminal V

Question 18

this CN innervates the muscles of expression, lacrimal glands, stylohyoid, stapedius, posterior belly of diagastric, taste for anterior portion of the tongue

Answer 18

facial VII

Question 19

this CN innervates the stylopharyngeus muscle, sensation of posterior portion of the tongue, soft palate, tonsils, adenoids

Answer 19

glossopharyngeal IX

Question 20

this CN innervates laryngeal and pharyngeal branches, which collectively innervate cricothyroid muscles and muscles of the pharynx and soft palate

Answer 20

vagus X

Question 21

this CN innervates intrinsic muscles of the tongue and extrinsic muscles of the tongue

Answer 21

hypoglossal XII

Question 22

the three extrinsic muscles of the tongue include: 1. ___ 2. ___ 3. ___ and are represented by CN XII

Answer 22

1. genioglossus
2. hyoglossus
3. styloglossus

Question 23

functions of CN ___ include: mastication, articulation, hyolaryngeal elevation, tensing / closing of soft palate, sensation to face, teeth, gums, anterior portion of the tongue

Answer 23

trigeminal V

Question 24

functions of CN ___ include: movements of facial expression, hyolaryngeal elevation, saliva and tear production, taste for anterior portion of tongue

Answer 24

facial VII

Question 25

functions of CN ___ include: elevation of larynx and pharynx during swallowing via stylopharyngeus, sensory component of gag reflex, triggers pharyngeal phase of swallow

Answer 25

glossopharyngeal IX

Question 26

functions of CN ___ include: voice production, velopharyngeal closure, swallowing, sensation of vocal folds for cough reflex, detection of bolus during swallowing

Answer 26

vagus X

Question 27

functions of CN ___ include: articulation, oral phase of swallowing, elevation of hyoid bone during swallowing

Answer 27

hypoglossal XII

Question 28

observed: reduced bulk and firmness in masseter muscles, deviation of jaw towards weak lateral pterygoid

Answer 28

trigeminal V

Question 29

observed: flattened nasolabial fold, lower face droop, smooth forehead

Answer 29

facial VII

Question 30

observed: absence of pharyngeal gag

Answer 30

glossopharyngeal IX

Question 31

observed: asymmetry of palate, hypophonia, glottal cough

Answer 31

vagus X

Question 32

observed: tongue atrophy, tongue deviation towards weak side

Answer 32

hypoglossal XII