Week 10

Question 0

Postganglionic parasympathetic efferent fibers of the third cranial nerve synapses in what targets?

Answer 0

sphincter pupillae and ciliaris intrinsic eye muscles

Question 1

Axons carried in the second cranial nerve will synapse in what specific location?

Answer 1

Lateral geniculate nucleus.

Question 2

What are the two unique features of the fourth cranial nerve?

Answer 2

it is the only cranial nerve with an apparent origin from the dorsal surface of the brain; it is the only cranial efferent nerve to decussate within the midline from its nucleus.

Question 3

The right fourth cranial nerve will innervate which side target muscle.

Answer 3

the right side muscle

Question 4

Somatic efferent fibers from the fourth cranial nerve will innervate which muscles?

Answer 4

superior oblique extrinsic muscle of the eye

Question 5

The fifth cranial nerve is functionally referred to as the?

Answer 5

Great sensory nerve of the face

Question 6

What location will each branch of the fifth cranial nerve pass into upon exit from the cranial vault?

Answer 6

ophthalmic nerve-orbit; maxillary nerve-pterygopalatine region; mandibular nerve-infratemporal region

Question 7

Peripheral sensory processes of the fifth cranial nerve are primarily derived from pseudounipolar afferent neuron cell bodies located in which ganglion?

Answer 7

semilunar ganglion, trigeminal ganglion, Gasserian ganglion

Question 8

Central sensory processes carried in the fifth cranial nerve synapse with the secondary sensory neuron cell bodies in what location?

Answer 8

mainly in the principal sensory nucleus; some in the spinal trigeminal nucleus

Question 9

What muscle are innervated by branchial efferent fibers conveyed in the fifth cranial nerve?

Answer 9

temporalis, masseter, medial pterygoid, lateral pterygoid, mylohyoid, anterior belly of the digastric, tensor tympani and tensor veli palatini

Question 10

What are the names of the muscles of mastication?

Answer 10

temporalis, masseter, medial pterygoid, lateral pterygoid.

Question 11

The fifth cranial nerve carries peripheral sensory processes from endings located in the muscles of mastication and the extraocular muscles to pseudounipolar cells located in which nucleus?

Answer 11

mesencephalic nucleus of the trigeminal nerve

Question 12

The sixth cranial nerve will innervate what target organs?

Answer 12

lateral rectus extrinsic muscle of the eye

Question 13

Peripheral sensory processes conveyed in the sixth cranial nerve will communicate with which cranial nerve branch?

Answer 13

ophthalmic division of trigeminal

Question 14

Because of its function, the seventh cranial nerve is often called the?

Answer 14

great motor nerve of the face

Question 15

What classifications of fibers are conveyed at the apparent origin of the seventh cranial nerve?

Answer 15

branchial efferent, visceral efferent, somatic afferent, special visceral afferent.

Question 16

What is the name of the afferent ganglion for the seventh cranial nerve?

Answer 16

geniculate ganglion, genicular ganglion

Question 17

Most of the seventh cranial nerve will exit the skull via what opening

Answer 17

the stylomastoid foramen

Question 18

Branchial efferent fibers carried in the seventh cranial nerve will innnervate what muscles?

Answer 18

muscles of facial expression, muscles of the scalp and auricle, the buccinator, platysma, stapedius, stylohyoid, and posterior belly of the digastric

Question 19

Visceral efferent fibers conveyed in the seventh cranial nerve originate from what nucleus?

Answer 19

superior salivatory nucleus

Question 20

Which immediate branch of the seventh cranial nerve will convey preganglionic parasympathetic efferent fibers to the lacrimal gland?

Answer 20

greater petrosal or greater superficial petrosal nerve

Question 21

Which branch of the seventh cranial nerve will convey preganglionic parasympathetic fibers into the pterygopalatine ganglion.

Answer 21

Vidian nerve or nerve of the pterygoid canal

Question 22

What are the names of the ganglion of synapse in the efferent pathway to the lacrimal gland?

Answer 22

pterygopalatine ganglion, sphenopalatine ganglion, Meckel’s ganglion

Question 23

Postganglionic parasympathetic efferent fibers from the pterygopalatine, sphenopalatine or Meckel’s ganglion become incorporated in which cranial nerve branch?

Answer 23

maxillary nerve of the trigeminal

Question 24

The parasympathetic pathway to the lacrimal gland will involve branches from which cranial nerves?

Answer 24

facial and trigeminal nerves

Question 25

The zygomaticotemporal nerve will convey postganglionic parasympathetic efferent fibers to the lacrimal gland through a communication with which branch to the fifth cranial nerve?

Answer 25

ophthalmic nerve

Question 26

Preganglionic parasympathetic efferent fibers from the seventh cranial nerve to the submandibular and sublingual glands will exit the pons in what nerve?

Answer 26

nervus intermedius, nerve of Wrisberg, sensory root of facial nerve

Question 27

Which intermediate branch of the seventh cranial nerve will convey preganglionic parasympathetic efferent fibers to the submandibular and sublingual glands?

Answer 27

Chorda tympani nerve

Question 28

The chorda tympani nerve exits the temporal bone via what opening?

Answer 28

the petrotympanic fissure of the temporal bone

Question 29

The chorda tympani nerve will join which nerve?

Answer 29

the lingual nerve of the mandibular division of the trigeminal

Question 30

Peripheral sensory processes from receptors around the ear and mastoid region are conveyed to the seventh cranial nerve from what other cranial nerve?

Answer 30

vagus

Question 31

In general, somatic afferent pathways typically terminate on which nucleus?

Answer 31

the spinal trigeminal nucleus

Question 32

What is the classification of sensory fibers associated with taste?

Answer 32

special visceral afferent fibers

Question 33

Peripheral sensory processes from taste receptors in the anterior two thirds of the tongue are conveyed in the seventh cranial nerve to what ganglion?

Answer 33

Genicular ganglion or geniculate ganglion

Question 34

At its apparent origin cranial nerve III conveys which classifications of neural pathways?

Answer 34

somatic efferent pathway and visceral efferent pathway

Question 35

What is the somatic efferent nucleus of the origin for the third cranial nerve?

Answer 35

oculomotor nuclear complex

Question 36

What is/are the target organs for the somatic efferent fibers carried in the third cranial nerve?

Answer 36

medial rectus, inferior rectus, superior rectus, and inferior oblique extrinsic muscles of the eyeball and the levator palpebrae superioris muscle of the eyelid

Question 37

Visceral efferent fibers conveyed in the third cranial nerve originate in what nucleus?

Answer 37

accessory oculomotor nucleus of Edinger/Westphal

Question 38

What is the location of synapse for preganglionic parasympathetic efferent fibers of the third cranial nerve?

Answer 38

ciliary ganglion

Question 39

Postganglionic parasympathetic efferent fibers of the third cranial nerve are carried in which nerve?

Answer 39

short ciliary nerve