Neuro - CN IX, X, XI, and XII Flashcards Preview

SP14 - Human Anatomy Exam 1 > Neuro - CN IX, X, XI, and XII > Flashcards

Flashcards in Neuro - CN IX, X, XI, and XII Deck (18):
1

Identify the location of the cell bodies of origin as well as the origin and termination of the SE component of the hypoglossal nerve.

hypoglossal nucleus in medulla -> rootlets exit adjacent to pyramid -> innervate intrinsic tongue muscles

2

Identify the location of the cell bodies of origin as well as the origin and termination of the SE component of the spinal accessory nerve.

spinal gray in cervical region -> innervate trapezius and sternocleidomastoid muscles

3

Identify the location of the cell bodies of origin as well as the origin and termination of the SVE component of the vagus nerve.

nucleus ambiguus -> muscles of speech and swallowing

4

Identify the location of the cell bodies of origin as well as the origin and termination of the 2 GVE components of the vagus nerve.

- dorsal motor nucleus of vagus -> viscera from neck to transverse colon (parasympathetic)
- nucleus ambiguus -> cardiac inhibition

5

Identify the location of the cell bodies of origin as well as the origin and termination of the GSA component of the vagus nerve.

skin of ear and middle ear cavity -> superior ganglion of vagus nerve -> trigeminal spinal nucleus

6

Identify the location of the cell bodies of origin as well as the origin and termination of the GVA component of the vagus nerve.

epiglottis -> inferior ganglion of vagus nerve -> solitary nucleus

7

Identify the location of the cell bodies of origin as well as the origin and termination of the SVA component of the vagus nerve.

epiglottis (taste) -> inferior ganglion of vagus nerve -> solitary nucleus

8

Identify the location of the cell bodies of origin as well as the origin and termination of the SVE component of the glossopharyngeal nerve.

nucleus ambiguus -> stylopharyngeus muscle

9

Identify the location of the cell bodies of origin as well as the origin and termination of the GVE component of the glossopharyngeal nerve.

inferior salivatory nucleus -> otic ganglion -> parotid gland

10

Identify the location of the cell bodies of origin as well as the origin and termination of the GSA component of the glossopharyngeal nerve.

skin of ear -> superior ganglion of glossopharyngeal nerve -> trigeminal spinal nucleus

11

Identify the location of the cell bodies of origin as well as the origin and termination of the 2 GVA components of the glossopharyngeal nerve.

- carotid body and carotid sinus (blood pressue and blood oxygen/carbon dioxide)
- posterior 1/3 of tongue -> inferior ganglion of glossopharyngeal nerve -> solitary nucleus

12

Identify the location of the cell bodies of origin as well as the origin and termination of the SVA component of the glossopharyngeal nerve.

posterior 1/3 of tongue -> inferior ganglion of glossopharyngeal nerve -> solitary nucleus

13

Name the striated muscle(s) innervated by the hypoglossal nerve.

intrinsic tongue muscles

14

Name the striated muscle(s) innervated by the spinal accessory nerve.

trapezius and sternocleidomastoid muscles

15

Name the gland innervated by CN IX. Name the parasympathetic ganglion involved.

- parotid gland
- otic ganglion

16

What is the effect of a lesion of CN XII?

- lower motor neuron lesion
- tongue deviates toward the side of the lesion
- fasciculations
- atrophy

17

What is the effect of a lesion of CN XI?

- patient cannot turn head against resistance
- patient cannot shrug shoulders against resistance

18

What is the effect of the jugular foramen syndrome (affects CN IX, X, XI, and XII)?

- pain in or behind the external ear
- headache (irriation of meningeal branch of CN X)
- hoarseness (muscles of speech)
- dysphagia (difficulty in swallowing, muscles of swallowing)