Organisms

Question 1

Mouth

Answer 1

Digestion of food starts in the mouth. Teeth break down the food and mix it with theenzymesin saliva.

Question 2

Oseophagus

Answer 2

This is a thin tube that connects the mouth to the stomach.

Question 3

Liver

Answer 3

This releases a chemical called bile into the intestines. Bile breaks downlipidsin the food.

Question 4

Stomach

Answer 4

This is a muscular bag which mixes food and drink with acid.

Question 5

Pancreas

Answer 5

This releases enzymes into the intestines which break down carbohydrates, protein and lipids in food.

Question 6

Small intestine

Answer 6

Here,carbohydrates,proteinsand lipids digest. The nutrients produced are then absorbed into the blood.

Question 7

Large intestine

Answer 7

Food which cannot be broken down - mainlyfibre- passes into the large intestine. Water is absorbed into the blood.

Question 8

Rectum

Answer 8

Any undigested food passes into the rectum where it is stored as faeces.

Question 9

Anus

Answer 9

This is the opening at the very end of the digestive system through which faeces leaves the body.

Question 10

What is mechanical digestion?

Answer 10

When teeth break down food in the mouth by grinding it up. Munching and chewing.

Question 11

What is chemical digestion?

Answer 11

When enzymes digest food into nutrients.