B2.1.4 - Digestive System Flashcards Preview

SHHS - Science - B2.1 Health and Lifestyle - Year 8 > B2.1.4 - Digestive System > Flashcards

Flashcards in B2.1.4 - Digestive System Deck (15)
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1

What is the digestive system?

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

2

Food eventually passes form your digestive system into your...

blood

3

What happens to food in the mouth?

Food is chewed and mixed with saliva.

Teeth break food into smaller chunks.

4

What happens to food in the gullet?

Food is pushed down into the stomach.

5

What happens to food in the stomach?

Food is mixed with digestive juices and acid.

6

What happens to food in the small intestine?

- Digestive juices form the liver and pancreas are added.

- Food is further broken down.

- Small nutrients pass through the intestine wall into blood.

7

What happens to food in the large intestine?

- Only food that cannot be digested gets here.

- Water is absorbed back into the body.

- The leftover solid waste food is called faeces.

8

What is the function (job) of the rectum?

To store faeces before it leaves the body.

9

Why is fibre important to the digestive system?

-It adds bulk to food.

-This allows food to be pushed through the digestive system.

10

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

  • 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.

11

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12

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13

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14

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15

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