3.7 Making Digestion Efficient

Question 1

Body temp

Answer 1

37 degrees

Question 2

Which pH does protease found in the stomach work best at

Answer 2

Acidic conditions

Question 3

Which pH does protease produced by the pancreas work best in

Answer 3

Alkaline conditions

Question 4

How many glands do you have in the lining of your stomach

Answer 4

35 million

Question 5

What do the glands in the stomach release

Answer 5

Pepsin

Question 6

What is pepsin

Answer 6

A protease enzyme

Question 7

What acid solution does the stomach produce

Answer 7

Hydrochloric acid

Question 8

What does hydrochloric acid do

Answer 8

Allows protease enzymes to work effectively, kills most of the bacteria in the food you eat

Question 9

What does the stomach produce that coats the walls

Answer 9

Thick layer of Mucus

Question 10

What does the mucus do

Answer 10

Coats stomach and prevents it from being digested by the acids and enzymes

Question 11

What happens when someone has a stomach ulcer

Answer 11

The protecting mucus is lost and acid production may increase, lining of stomach attacked by acid and enzymes, very painful

Question 12

How long does it take for food to leave stomach after meal is eaten

Answer 12

A few hours

Question 13

How does the acidic liquid from stomach become alkaline

Answer 13

Thanks to bile, green-yellow alkaline liquid made by liver and stored by gall bladder until it is needed

Question 14

What happens when food comes from the stomach to the small intestine

Answer 14

Bile squirted onto it through the bile duct, bile neutralises acid from stomach

Question 15

Do enzymes of the digestive system need to work on a small or large surface area

Answer 15

Large

Question 16

What is the problem with digesting fat?

Answer 16

They do not mix with the watery liquids in the digestive system, they stay as large globules, making it difficult for lipase enzymes to act

Question 17

What is the second function of bile other than making solutions alkaline?

Answer 17

It emulsifies the fats in food, breaks up large drops of fat into smaller droplets, provides a larger surface area of fats for the lipase enzymes to act upon, this helps lipase break down fats more quickly

Question 18

What can happen in the gall bladder and bile ducts?

Answer 18

Gall stones can from and block the gall bladder and bile duct, can cause great pain, can also stop bile being released onto food and reduce efficiency of digestion