Digestion

Question 1

Define digestion

Answer 1

The breaking down of food into smaller pieces so they can be absorbed by the body

Question 2

Name the three main types of teeth

Answer 2

Incisors, canines and molars

Question 3

Describe the function of the incisors

Answer 3

For biting

Question 4

Describe the function of the canines

Answer 4

To tearing or ripping food

Question 5

Describe the function of the molars

Answer 5

For chewing or grinding food

Question 6

What types of teeth would you expect to find in a herbivore and why?

Answer 6

Molars because they need to grind up plant material

Incisors as well to initially bite the food off the rest of the plant

Question 7

What types of teeth would you expect to find in a carnivore and why?

Answer 7

Canines because they need to rip meat off the animal

Question 8

What types of teeth would you expect to find in an omnivore and why?

Answer 8

All sets of teeth because they need to bite food off the plant of animal, grind up plant material and rip meat off the animal

Question 9

In a tooth, what is the protective covering called?

Answer 9

Enamel

Question 10

Inside a tooth, what is the main mass of the tooth?

Answer 10

Dentine

Question 11

The pulp cavity contains what two structures?

Answer 11

Blood vessels and nerves

Question 12

Why are molars wide?

Answer 12

Larger surface area to grind plant material up more easily

Question 13

What part of the tooth holds it into the jaw?

Answer 13

Root

Question 14

What liquid is used to help breakdown food in the mouth?

Answer 14

Saliva

Question 15

Where is this saliva made?

Answer 15

Salivary glands

Question 16

What does saliva contain that helps breakdown food?

Answer 16

Enzymes

Question 17

What food group is mainly broken down in the mouth?

Answer 17

Carbohydrates

Question 18

What is the name of the tube that takes food from the mouth to the stomach?

Answer 18

Oesophagus

Question 19

What two substances does the stomach contain to help break down food?

Answer 19

Enzymes and acid (hydrochloric acid)

Question 20

What food group starts being broken down in the stomach?

Answer 20

Protein

Question 21

What is the function of the small intestine?

Answer 21

To finish digesting food and to absorb the good nutrients from the food into the blood

Question 22

What are the finger-like projections that are found on the inside of the small intestine?

Answer 22

Villi

Question 23

Why does the small intestine have villi?

Answer 23

To increase the surface area to nutrients can be absorbed faster

Question 24

What does the liver produce to help with digestion?

Answer 24

Bile

Question 25

What food group does bile help digest?

Answer 25

Lipids (fats and oils)

Question 26

Where is the bile stored?

Answer 26

In the gall bladder

Question 27

What is the function of the large intestine?

Answer 27

To absorb water out of the unwanted food before it is released from the body

Question 28

What is the function of the rectum?

Answer 28

To group unwanted food into faeces

Question 29

What is the function of the anus?

Answer 29

To eject or excrete unwanted food out of the body