Autonomic System and CN III, VII, IX, X

Question 1

Which cervical ganglia sends stuff up to the head and neck?

Answer 1

Superior

Question 2

Where do sympathetic nervs originate from?

Answer 2

T1-L2

Question 3

Which ganglionic neuron is associated with CN III? What target organ does ciliary ganglion go on to innervate?

Answer 3

Ciliary

Intrinsic eye muscles (pupil and lens shape)

Question 4

Which ganglionic neuron is associated with CN VII? What target organ does ciliary ganglion go on to innervate?

Answer 4

Pterygopalatine and submandibular ganglion

Nasal glands, tear glands, salivary glands

Question 5

Oculomotor (CN III) course and distribution

Answer 5

1. Anterior of midbrain
2. Middle cranial fossa
3. Lateral wall of cavernous sinus
4. Divide into superior and inferior ramus
5. Superior orbital fissure
6. Eye muscles

Question 6

Glossopharyngeal nerve (IX) Course and Distribution

Answer 6

1. Anterior medulla
2. Passes laterally in the posterior cranial fossa
3. Jugular forman
4. Descends through upper part of neck to back of tongue

Question 7

What nerves travel through the cavernous sinus?

Answer 7

III, IV, V1, V2, VI

Question 8

What functional group is parasympathetic in CN V?

Answer 8

None; CN V has no parasympathetic

Question 9

Vagus nerve (X) course and distribution

Answer 9

1. Anterior medulla
2. Runs through posterior cranial fossa laterally
3. Passes through jugular foramen
4. Descends through neck alongside carotid arteries and jugular vein in the carotid sheath
5. Through mediastinum
6. Pierces diaphragm with esophagus
7. Terminal branches in abdomen

Question 10

Which cranial nerve has the most extensive distribution?

Answer 10

X