B2.1.4 - Digestive System

Question 1

What is the digestive system?

Answer 1

A group of organs that work together to break down food from large molecules into smaller molecules.

Question 2

Food eventually passes form your digestive system into your…

Answer 2

blood

Question 3

What happens to food in the mouth?

Answer 3

Food is chewed and mixed with saliva.

Teeth break food into smaller chunks.

Question 4

What happens to food in the gullet?

Answer 4

Food is pushed down into the stomach.

Question 5

What happens to food in the stomach?

Answer 5

Food is mixed with digestive juices and acid.

Question 6

What happens to food in the small intestine?

Answer 6

• Digestive juices form the liver and pancreas are added.
• Food is further broken down.
• Small nutrients pass through the intestine wall into blood.

Question 7

What happens to food in the large intestine?

Answer 7

• Only food that cannot be digested gets here.
• Water is absorbed back into the body.
• The leftover solid waste food is called faeces.

Question 8

What is the function (job) of the rectum?

Answer 8

To store faeces before it leaves the body.

Question 9

Why is fibre important to the digestive system?

Answer 9

• It adds bulk to food.
• This allows food to be pushed through the digestive system.

Question 10

How is the wall of the small intestine adapted to absorb nutrients into the blood?

Answer 10

• It has villi (small finger like structures) that increase the surface area of the intestine for fast absorption.
• It has thin walls so food does not need to travel far to get to blood.
• It contains many blood capillaries to carry absorbed nutrients away.

Question 11

Idenitfy the missing label.

Answer 11

Question 12

Idenitfy the missing label.

Answer 12

Question 13

Idenitfy the missing label.

Answer 13

Question 14

Idenitfy the missing label.

Answer 14

Question 15

Idenitfy the missing label.

Answer 15