Digestion

Question 0

Salivary glands

Answer 0

Produces saliva: enzyme to break down starch, lubricates food

Question 1

Function of the digestive system

Answer 1

To break down food and absorb the nutrients produced into the bloodstream.

Question 2

Oesophagus

Answer 2

Connects mouth and stomach

Question 3

Stomach

Answer 3

Digests protein and stops bacteria getting any further
Muscular tissue to mix
Glandular tissue to secret enzymes and acid
Epithelial tissue covers the stomach

Question 4

Small intestine

Answer 4

Digestion completed and products absorbed. Soluble food absorbed.

Question 5

Pancreas

Answer 5

Secrets enzymes

Question 6

Liver

Answer 6

Makes bile

Question 7

Large intestine

Answer 7

Water absorbed, leaving faeces

Question 8

Villi adaptations

Answer 8

Finger like projections = large surface area

Thin + many capillaries closets the wall = easier for diffusion

Question 9

Where are villi

Answer 9

In the small intestine

Question 10

What makes up the digestive system and what does it do

Answer 10

Glands (pancreas & salivary glands) produce digestive juices
Stomach & small intestine digestion occurs due to enzymes in juices
Liver produces bile to aid lipid digestion
Small intestine absorption of soluble food through villi
Large intestine where water is absorbed leaving I digested food = faeces

Question 11

What is digestion

Answer 11

The break down of insoluble molecules into soluble ones that can be absorbed

Question 12

Amylase released

Answer 12

Salivary, pancreas and small intestine

Question 13

Amylase do and where

Answer 13

Starch into sugars

Mouth and small intestine

Question 14

Protease produced where

Answer 14

Stomach
Pancreas
Small intestine

Question 15

Protease breaks down what where

Answer 15

Proteins into amino acids in the stomach and small intestine

Question 16

Lipease is produced where

Answer 16

Pancreas

Small intestine

Question 17

Lipase breaks down what where

Answer 17

Lipids into glycerol and fatty acids

Small intestine

Question 18

What does bile do

Answer 18

Neutralises stomach acid
Makes conditions for the small intestine slightly alkali
Emulsifies fats

Question 19

Why must fats be emulsified

Answer 19

To increase the SA of the fats for lipease enzymes to act upon

Question 20

What is pepsin

Answer 20

A protease from the stomach

Question 21

Where is bile produced

Answer 21

Liver

Question 22

Where is bile stored

Answer 22

Gall bladder