Module Exam 5: Cranial Nerves Flashcards Preview

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Flashcards in Module Exam 5: Cranial Nerves Deck (106)
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Part of the peripheral nervous system. Written down in roman numerals.

Cranial nerves

1

Enumerate all the Cranial nerves in order

Olfactory, Optic, Oculomotor, Trochlear, Trigeminal, Abducens, Facial, Vestibulocochlear, Glossopharyngeal, Vagus, Spinal accesory & Hypoglossal

2

Cranial nerves that are extensions of teleencephalon

Olfactory & Optic

3

Cranial nerves that exit from Midbrain

Oculomotor & Trochlear

4

Cranial nerves that exit from pons

Trigeminal, Abducens, Facial & Vestibulocochlear

5

Cranial nerves that exit from Medulla

Glossopharyngeal, Vagus, Spinal accessory & Hypoglossal

6

What are the sensory nuclei of the Trigeminal nerve

Principal sensory, Mesencephalic & Spinal trigeminal

7

What are the parts of the motor nucleus of the Trigeminal nerve

Motor & Sensory part

8

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

Spinal Trigeminal nucleus

9

Spinal Trigeminal nucleus is located in

Medulla

10

CNs __, __ & __ also convey pain information from their areas to the spinal trigeminal nucleus.

VII, IX & X

11

A group of second order neurons which have cell bodies in the caudal pons. Receives information about discriminative sensation and light touch of the face as well as conscious proprioception of the jaw via _________ neurons.

Principal sensory nucleus. First order neurons.

12

In PSN, most of the sensory information crosses the midline and travels to the __________ nucleus of the thalamus via the ___________.

Contralateral Ventral PosteroMedial. Ventral Trigeminothalamic Tract.

13

In PSN, information from the oral cavity travels to the __________ nucleus of the thalamus via ___________.

Ipsilateral Ventral PosteroMedial. Dorsal Trigeminothalamic tract.

14

Involved in the proprioception of the face, that is, the feeling of position in the muscle. Unlike many nuclei within the CNS, this nucleus contains no chemical synapses.

Mesencephalic nucleus

15

The electrically coupled neurons of the mesencephalic nucleus are __________ receiving proprioceptive information from the mandible, and sending projections to the ________ to mediate monosynaptic __________.

Pseudounipolar cells. Motor trigeminal nucleus. Jaw jerk reflexes.

16

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

Mesencephalic nucleus. Ganglia.

17

Trigeminal nerve's sensory distribution

V1: Ophthalmic
V2: Maxillary
V3: Mandibular

18

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.

Trigeminal motor nucleus

19

Trigeminal motor nucleus is located in

Mid pons

20

CN V motor innervation: muscles of mastication & others

-Masseter, temporalis, medial pterygoid & lateral pterygoid
-Tensor veli palatini, mylohyoid, anterior belly of digastric & tensor tympani

21

Controls the muscles of facial expression. Conveys taste sensations from anterior 2/3 of the tongue and oral cavity.

Facial nerve

22

Supplies preganglionic parasympathetic fibers to several head and neck ganglia

Facial nerve

23

The motor part of the facial nerve arises from

Facial nerve nucleus in the pons

24

The sensory and sympathetic parts of the facial nerve arise from

Nervus intermedius

25

Facial nerve forms the ________ prior to entering the facial canal

Geniculate ganglion

26

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

Greater petrosal nerve

27

Provides motor innervation for stapedius muscle in middle ear

Nerve to stapedius

28

Intracranial branches of Chorda tympani

Submandibular gland, Sublingual gland and special sensory taste fibers from the anterior 2/3 of the tongue

29

Provides parasympathetic innervation to the sphenoid, frontal, maxillary and ethmoid sinuses as well as the nasal cavity.

Greater petrosal nerve