Digestive System

Question 1

Mouth

Answer 1

• Physical digestion by teeth

- Chemical digestion by enzymes in saliva

Question 2

Oesophagus

Answer 2

A tube that carries food from the mouth to the stomach by muscular contractions called ‘peristalsis’

Question 3

Stomach

Answer 3

A muscular sac lined with mucous. Food is mixed with stomach acid (Hydrochloric acid) and digestive enzymes and
churned (mixed up).

Question 4

Liver

Answer 4

A large organ that produces a green liquid called bile that neutralises stomach acid and helps break down fats into tiny
droplets.

Question 5

Pancreas

Answer 5

A gland (leaf-shaped) below the stomach that produces digestive enzymes that help break down food.

Question 6

Gall Bladder

Answer 6

A small sac below the liver. It stores and releases bile into the small intestine.

Question 7

Bile Duct

Answer 7

Tube like structure which carries bile from the gallbladder to the (duodenum) - word doesn’t need to be learnt

Question 8

Small Intestine

Answer 8

Long thin tube that food moves through after the stomach. Digested food is absorbed from the small intestine into
bloodstream. More enzymes are produced here to break down food further.
The blood then transports the nutrients to all body cells.

Question 9

Large Intestine

Answer 9

Water is reabsorbed back into the bloodstream from undigested food. Passes undigested food to the rectum.

Question 10

Rectum

Answer 10

The lower part of the large intestine, where the undigested food called faeces (poo) is stored before it leaves the body.

Question 11

Anus

Answer 11

The muscular opening at the end of the digestive system from which faeces (poo) leaves the body.

Question 12

In order where does the food travel?

Answer 12

Mouth - Oesophagus - Stomach - Liver/Gall Bladder/Bile duct - Pancreas - Small intestine - Large intestine - Rectum - Anus