Innervations, Brought To You By Nikki

Question 1

What is CN V (trigeminal) responsible for?

Answer 1

Motor to chew

Question 2

Which cranial nerves are part of the parasympathetic innervation of chewing and swallowing?

Answer 2

CN VII, IX, and X

Question 3

What is CN VII (facial) responsible for?

Answer 3

-salivation at submandibular and sublingual glands*** IMPORTANT
-sensation of taste to the anterior 2/3 of the tongue
-Sensation to oropharynx

Question 4

What is CN IX (glossopharyngeal) responsible for?

Answer 4

-motor to swallow*
-salivation @ parotid gland*
-sensation of taste to posterior 1/3 of the tongue

Question 5

What is CN X (vagus) responsible for?

Answer 5

Innervations from the esophagus all the way through the large intestine

Question 6

What is CN XII (hypoglossal) responsible for?

Answer 6

Motor innovation of the tongue

Question 7

T/F: the sympathetic nervous system is inhibitory to GI tract

Answer 7

TRUE - goes from salivary glands all the way through the large intestine

Question 8

What are the two intrinsic plexuses of the GI?

Answer 8

-Auerbach’s/Myenteric
-Meissner’s/submucosal

Question 9

What does the Auerbach/myenteric plexus innervate?

Answer 9

The muscular is external layer

Question 10

What does the meissner/submucosal plexus innervate?

Answer 10

The submucosa layer