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Flashcards in Spinal Exam 3 Wk 3 Deck (20)
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1
Q

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

A

Opthalmic division of trigeminal

2
Q

What are two unique features of the fourth cranial nerve?

A

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 midbrain from its nucleus.

3
Q

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

A

The right side muscle

4
Q

Which of the cranial nuclei of termination contain primary afferent neurons?

A

Mesencephalic nucleus of the trigeminal nerve.

5
Q

The fifth cranial nerve is functionally referred to as the ______?

A

Great sensory nerve of the face

6
Q

What is the exit site from the cranial vault for each division of the fifth cranial nerve?

A

Ophthalmic nerve-superior orbital fissure,
Maxillary nerve-foramen rotundum,
Mandibular division-foramen ovale

7
Q

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

A

Ophthalmic nerve - orbit;
Maxillary nerve - pterygopalatine region;
Mandibular nerve - infratemporal region.

8
Q

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

A

Semilunar ganglion, trigeminal ganglion, gasserian ganglion.

9
Q

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

A

Mainly in the principal sensory nucleus; some in the spinal trigeminal nucleus.

10
Q

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

A

Temporalis, masseter, medial pterygoid, mylohyoid, anterior belly of the digastric, tensor tympani and tensor veli palatini.

11
Q

What are the names of the muscles of mastication?

A

Temporalis, masseter, medial pterygoid, lateral pterygoid.

12
Q

Peripheral sensory processes from receptors located in the muscles of mastication are conveyed in which branch of the fifth cranial nerve?

A

Mandibular division of trigeminal

13
Q

The sensory root of the trigeminal nerve will have an apparent origin from which part of the encephalon?

A

The pons

14
Q

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

A

Msencephalic nucleus of the trigeminal nerve

15
Q

Afferent neurons within the mesencephalic nucleus that are associated with sensation from the muscles of mastication will synapse at what locations?

A

Trigeminal motor nucleus or spinal trigeminal nucleus

16
Q

What is the classification of the mandibular division of the cranial nerve V based on function?

A

Mixed cranial nerve

17
Q

At its apparent origin cranial nerve VI conveys which classification of neural pathway?

A

Somatic efferent pathway

18
Q

The sixth cranial nerve will innervate what target organ(s)?

A

Lateral rectus extrinsic muscle of the eye

19
Q

Typically, primary afferent neurons of the sixth cranial nerve located in the semilunar ganglion, gasserian ganglion , or trigeminal ganglion will synapse in what nucleus?

A

Spinal trigeminal nucleus

20
Q

In the somatic afferent pathway of cranial nerve VI, neurons within the mesencephalic nucleus may synapse at what locations?

A

Abducent or abducens motor nucleus or spinal trigeminal nucleus