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Flashcards in Digestion Deck (14):
1

The two main ways of breaking down food are ...

Mechanically breaking down food e.g chewing with teeth

Chemically breaking down food e.g enzymes are biological catalysts, this means they speed up the rate of chemical reactions in the body

2

Digestion starts in the mouth, what happens?

The teeth have a good chew and mix the food with the saliva. Saliva contains an enzyme, called amylase, that breaks down the carbohydrates.

3

The second process of the digestive system is the ...

Oesophagus links the mouth to the stomach

4

What is the pH in the stomach?

Acid from HCl

5

What is the pH in bile?

Alkaline

6

Where is bile made?

Liver

7

What does the liver do?

Make bile

8

What does bile do?

Breaks fats into tiny droplets (emulsification)

It is alkaline to give the right pH for enzymes in the small bowel

9

What does the pancreas do?

It produces 3 enzymes
Protease
Lipase
Carbohydrase

10

What happens in the stomach?

Mechanical
Enzymes
Acid -HCl - kills harmful bacteria and makes the right pH for enzymes in the stomach

11

What happens in the small intestine?

More enzymes
Food is absorbed into the blood stream

12

What happens in the large intestine?

Water is absorbed

13

What is in the rectum?

Undigested food (faeces)

14

What happens after absorption?

Small molecules pass through the gut into the blood. Then carried around the blood to cells