Digestion LG

Question 1

Where does digestion start and end

Answer 1

Mouth Oesopahgus Stomach Small intestine Large intesine rectum Anus

Question 2

What are the three accessory organs in digestion

Answer 2

The liver pancreas and gallbladder

Question 3

What do the accessory organs do

Answer 3

The liver produces bile in the stomach. The gallbladder stores this bile. The pancreas produces all three enzymes in the small intestine protease amylase lipase

Question 4

What are the two things that bile does

Answer 4

Bile emulsifies fat meaning it makes them into tiny droplets which give the lipase more surface area to work on in the stomach. Bile also neutralizes the stomach because the stomach can get too acidic. This solution goes to the small intestine in which the enzymes require an alkali solution to work best

Question 5

What do salivary glands do

Answer 5

They produce saliva which contains amylase which break down starch into maltose

Question 6

What type of protease does the stomach release

Answer 6

It releases pepsin

Question 7

Describe 3 adaptations of the small intestine

Answer 7

1) Thin walls for diffusion
2)Good supply for diffusion and absorption
3)Villi increases surface area and absorption

Question 8

what does the large intestine do

Answer 8

It absorbs excess water from the food