L4: Mouth and Swallowing

Question 1

What are the 4 roles of saliva?

Answer 1

1) Lubrication
2) Facilitation of taste
3) Protection against gut bacteria/acid
4) Digestion

Question 2

What control almost entirely regulates saliva production?

Answer 2

Neural control

Question 3

Both parasympathetic and sympathetic activity increase secretion of saliva but which induces:

1) watery saliva
2) mucoid saliva

Answer 3

1) Watery = paraysmpathetic

2) Mucoid = sympathetic

Question 4

Name the 3 salivary glands

Answer 4

1) Parotid
2) Submandibular
3) Sublingual

Question 5

Which of the 3 salivary glands is the largest?

Answer 5

Parotid

Question 6

Which of the 3 salivary glands secretes the largest volume of saliva?
What percentage does it secrete?

Answer 6

Submandibular

70%

Question 7

Which 2 salivary glands are controlled by parasympathetic supply via CN-VII?

Answer 7

Submandibular
Sublingual
(the subs)

Question 8

Which salivary gland produces the main source of lingual lipase?

Answer 8

Sublingual

Question 9

Ptyalin a-Amylase is involved in the initial digestion of which type of saccharides?
Monosaccharides
Disaccharides
Polysaccharides

Answer 9

Polysaccharides

Question 10

Which 2 alpha linkages make up starch and other large polysaccharides?

Answer 10

a-1,4 and a-1,6

Question 11

Which alpha linkage making up starch and other polysaccharides cause branches?

Answer 11

a-1,6

Question 12

a-Amylases cut at which sites?

a-1,4 or a-1,6

Answer 12

a-1,4

Question 13

Lingual lipase is involved in the initial digestion of?
Triglycerides
Peptides
Starch

Answer 13

Triglycerides

Question 14

Epithelial cells control:
Odour
Taste
Vision
Hearing

Answer 14

Taste

Question 15

Nerve cells control:
Odour
Taste
Vision
Hearing

Answer 15

Odour

Question 16

Is the stimuli conscious or not in the cephalic phase?

Answer 16

Both - some conscious, some not

Question 17

In the parasympathetic control that mediates the cephalic phase, which cranial nerves control:

1) Salivary secretion via facial/glossopharyngeal nerves?
2) GI motility/secretion via vagus?

Answer 17

1) CN-VII and CN-IX

2) CN-X