Module 5 cranial nerves

Question 1

also convey pain information from their areas to the spinal trigeminal nucleus

Answer 1

CNs VII, IX and X

Question 2

Located in the medulla •Receives information about deep/crude touch, pain and temperature from the ipsilateral face

Answer 2

Spinal trigeminal nucleus

Question 3

A group of second order neurons which have cell bodies in the caudal pons

Answer 3

Principal sensory nucleus

Question 4

Principal sensory nucleus Receives information about discriminative sensation and light touch of the face as well as conscious propioception of the jaw via?

Answer 4

1st order neuron

Question 5

Most of the sensory information crosses the midline and travels to the __________________ nucleus of the thalamus via the ventral ___________________ (principal nucleus)

Answer 5

Contralateral ventral posteriomedial ( VPM); ventral trigeminothalamic tract

Question 6

Information from the oral cavity travels to the ________________ nucleus of the thalamus via the ____________ (principal nucleus)

Answer 6

Ipsilateral ventral posteriomedial; dorsal trigeminothalamic tract

Question 7

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

Answer 7

Mesenchepalic nucleus

Question 8

Mesenchepalic nucleus Unlike many nuclei within the CNS, this nucleus contains no ____________ but are _____________

Answer 8

Chemical synapses; electrically coupled

Question 9

Neurons of mesencephalic nucleus are?

Answer 9

Pseudounipolar cells

Question 10

Pseudounipolar cells, receiving propioceptive information from the ______________, and sending projections to the__________________to mediate ___________________

Answer 10

Mandible; motor trigeminal nucleus; monosynaptic jaw jerk reflexes

Question 11

Mesencephalic nucleus, The only structure in the CNS to contain the cell bodies of a ___________, which are usually contained within _________

Answer 11

Primary afferent ;Ganglia

Question 12

Located in the mid-pons

Answer 12

Trigeminal motor nucleus

Question 13

Trigeminal motor nucleus innervates

Answer 13

Muscle of masication
Tensor tympani
Tensor veli palatini 
Mylohyoid 
Anterior belly of the digastric

Question 14

What are the muscles of masication?

Answer 14

Masseter
Temporalis
Medial pterygoid
Lateral pterygoid

Question 15

Controls the muscles of facial expression

Answer 15

Facial nerve

Question 16

Facial nerve Conveys taste sensations from the ____________ of the tongue and oral cavity

Answer 16

Anterior Two thirds

Question 17

Facial nerve Supplies ____________________ fibers to several head and neck ganglia

Answer 17

Preganglionic parasympathetic

Question 18

The motor part of the facial nerve arises from the

Answer 18

Facial nerve nucleus of the pons

Question 19

sensory and parasympathetic parts of the facial nerve arise from the

Answer 19

Nervus intermedius

Question 20

Faial nerve Forms the _______________ prior to entering the facial canal

Answer 20

Geniculate ganglion

Question 21

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

Answer 21

Greater petrosal nerve

Question 22

Greater petrosal nerve also provides parasympathetic innervation to the

Answer 22

sphenoid, 
frontal, 
maxillary and 
ethmoidsinuses as well as the
 nasal cavity

Question 23

provides motor innervation for stapediusmuscle in middle ear

Answer 23

Nerve to stapedius

Question 24

Special sensory taste fibers for the anterior 2/3 of the tongue

Answer 24

Chorda thympani

Question 25

Exit of extracranial branches of facial nerve

Answer 25

Sylomastoid foramen

Question 26

controls movements of some of the scalp muscles around the ear

Answer 26

Posterior auricular nerve

Question 27

Five major facial branches (in parotid gland

Answer 27

temporal, zygomatic, buccal, marginal mandibular, cervical

Question 28

Exit of motor nucleus of fascial nerve

Answer 28

Internal acoustic meatus

Question 29

Mixed motor and sensory but mostly sensory •Aids in tasting, swallowing and salivary secretions

Answer 29

Glossopharyngeal nerve

Question 30

Glossopharyngeal Its superior and inferior (petrous) ganglia contain the cell bodies of ________

Answer 30

Pain fibers

Question 31

Solitary nucleus receive information from?

Answer 31

Carotid baroreceptors and carotid body chemoreceptors

Question 32

somatic sensory fibers from the middle ear

Answer 32

Spinal nucleus of trigeminal nerve

Question 33

Lateral nucleus of ala cinerea

Answer 33

Visceral pain

Question 34

the lower motor neurons for the stylopharyngeus muscle

Answer 34

Nucleus ambiguus

Question 35

parasympathetic input to the parotid and mucus glands

Answer 35

Inferior salivatory nucleus

Question 36

Glossopharyngeal nerve branches

Answer 36

Tympanic •Stylopharyngeal •Tonsillar •Nerve to carotid sinus •Branches to the posterior third of the tongue •Lingual branches •A communicating branch to the Vagus Nerve

Question 37

Exit of glossopharyngeal nerve?

Answer 37

Jugular foramen

Question 38

The vagus runs posterior to the ______________ and ____________inside the carotid sheath

Answer 38

Common carotid artery; internal jugular vein

Question 39

Vagus nerve Includes axons which emerge from or converge onto

Answer 39

Four nuclei of the medlulla

Question 40

sends parasympathetic output to the viscera, especially the intestines

Answer 40

Dorsal nucleus of vagus

Question 41

gives rise to the branchialefferent motor fibers of the vagusnerve and preganglionic parasympathetic neurons that innervate the heart

Answer 41

Nucleus ambiguus

Question 42

receives afferent taste information and primary afferents from visceral organs

Answer 42

Solitary nucleus

Question 43

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 43

Spinal trigeminal nucleus

Question 44

How many percent of the nerve fibers in the vagusnerve are afferent nerves communicating the state of the viscera to the brain

Answer 44

80-90

Question 45

Accessory nerve Provides motor innervation from the CNS to two muscles of the neck: the

Answer 45

Scm and trapezius

Question 46

tilts and rotates the head

Answer 46

SCM

Question 47

elevates shoulder and adducts the scapula

Answer 47

Trapezius

Question 48

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

Answer 48

Hypoglossal nerve

Question 49

somatic (touch/pain/temperature/propioception) or special (special senses

Answer 49

Afferent

Question 50

visceral (internal organs) or somatic (skeletal muscles

Answer 50

Efferent

Question 51

special afferent

Answer 51

Cranialnerve 2

Question 52

Visceral efferent

Answer 52

Cranial nerve 10