The Path Of Food

Question 1

Ingestion

Answer 1

Taking in food

Question 2

Digestion

Answer 2

breaking down food

Question 3

Absorption

Answer 3

taking digested food from our intestines into our blood

Question 4

Assimilation

Answer 4

using the food in the cells of the body

Question 5

Egestion

Answer 5

discharge of undigested waste

Question 6

Why do we need food?

Answer 6

To give us energy, provide raw material for growth, allow us to repair the body

Question 7

What are the two types of digestion

Answer 7

Physical digestion and chemical digestion

Question 8

What’s chemical digestion?

Answer 8

breakdown of food using enzymes (or hydrochloric acid in the stomach).

Question 9

What are enzymes?

Answer 9

An enzyme is a chemical (made of protein) produced by the body that speeds up chemical reactions in the body without the enzyme being used up.

Question 10

What does a catalyst do?

Answer 10

Speed up chemical reactions

Question 11

What enzyme does saliva contain?

Answer 11

Amylase, which breaks starch down into maltose

Question 12

What is physical digestion?

Answer 12

Physical digestion is the breakdown of food using mechanical or physical methods.

Question 13

What is physical digestion?

Answer 13

Physical digestion is the breakdown of food using mechanical or physical methods.

Question 14

Incisers

Answer 14

Sharp edges, like a chisel
Used to cut, slice and nibble food

Question 15

Canine

Answer 15

Long and pointed
Used to grip and tear food

Question 16

Premolers

Answer 16

Large with flat surfaces
Used for chewing, crushing and grinding food

Question 17

Molars

Answer 17

Larger than premolars
Used for chewing, crushing and grinding food

Question 18

Oesophagus

Answer 18

The oesophagus, or food pipe, is a muscular tube. It forces food down from the mouth to the stomach using a wave of muscular action (called peristalsis). Peristalsis also pushes food through the rest of our intestines.

Question 19

Small intestine

Answer 19

The small intestine is a long tube (about 6 metres) but it has a narrow diameter. It has two functions:
• Digestion, Absorption.

Question 20

Liver

Answer 20

The liver is a complex organ that carries out a range of functions: produces bile

Question 21

Pancreas

Answer 21

The pancreas produces many digestive enzymes.

Question 22

Large intestine

Answer 22

Takes water back into blood stream (reabsorbs water) and the semi solid material left is faeces.

Question 23

Stomach

Answer 23

Hydrochloric acid in the stomach kills bacteria and softens food.
The stomach produces enzymes that chemically digest food. The stomach also churns and physically digests and mixes the food.