Upper GI structure and function

Question 1

what is in saliva?

Answer 1

water

mucins

alpha amylase

electrolytes

Question 2

alpha amylase breaks down polysaccharides into what?

Answer 2

diasacharides

Question 3

parasympathetic stimulation of salivation is via what cranial nerves?

Answer 3

facial

glossopharyngeal

Question 4

parasympathetic stimulation of salivation gives you what kind of saliva?

Answer 4

watery

Question 5

sympathetic stimulation of salivation gives you what kind of saliva?

Answer 5

small volume, viscous

high mucus and amylase content

Question 6

4 layers of wall of oesophagus

Answer 6

mucosa

submucosa

muscularis externa

adventitia

Question 7

the mucosa in the oesophagus is lines by what?

Answer 7

stratified squamous epithelium

non-keratinised

Question 8

upper 1/3rd of muscularis externa is

Answer 8

skeletal muscle

Question 9

lower 2/3rds of muscularis externa is

Answer 9

smooth muscle

Question 10

where is the swallowing centre?

Answer 10

medulla

Question 11

what intrinsic factor does the stomach produce?

Answer 11

vitamin B12

Question 12

serosa in the stomach is made up of

Answer 12

connective tissue

Question 13

submucosa + mucosa are the

Answer 13

rugae

Question 14

muscularis extrena in the gut has what three layers

Answer 14

longitudinal muscle (outer)

circular muscle (middle)

oblique muscle (inner)