Key Area 7: Absorption of Materials

Question 1

Oxygen and nutrients from food must be

Answer 1

absorbed into the blood stream to be delivered to cells for respiration

Question 2

waste materials such as carbon dioxide must be

Answer 2

removed from the cells into the blood stream

Question 3

tissues contain capillary networks ro allows

Answer 3

the exchange of materials at cellular level

Question 4

Bronchi to

Answer 4

bronchioles and alveoli

Question 5

trachea

Answer 5

windpipe that stays open to allow air to reach the lungs

Question 6

bronchus

Answer 6

the pipe which allows air to enter each lung

Question 7

bronchiole

Answer 7

small pipes leading to the air sacs

Question 8

alveoli

Answer 8

tiny sacs where gas exchange occur

Question 9

ribs

Answer 9

protect the lungs and heart

Question 10

intercostal muscles

Answer 10

contract to move the ribs

Question 11

disphragm

Answer 11

muscle that contracts to allow breathing

Question 12

Lungs are efficient for gas exchange because

Answer 12

they have a large surface area (due to the large number of alveoli)

the alveoli have thin walls (allowing gas to diffuse more easily)

they have extensive blood supply ( a dense network or capillaries)

Question 13

Small intestines

Answer 13

nutrients from food are absorbed into the body from the villi in the small intestine

Question 14

Oxygen and nutrients from food must be absorbed into the

Answer 14

Bloodstream to be delivered to cells for respiration

Question 15

Waste materials such as … must be removed from the cells into the blood stream

Answer 15

Carbon dioxide

Question 16

Tissues contain

Answer 16

Capillary networks

Question 17

The tissues contain capillary networks to allow the

Answer 17

Exchange of materials at a cellular level

Question 18

Surfaces involved in the absorption have certain features in common

Answer 18

Large surface area, thin walls, extensive blood supple

Question 19

Lungs are

Answer 19

Exchange organs

Question 20

Oxygen and carbon dioxide are absorbed through the

Answer 20

Thin alveolar walls to or from the many blood capillaries

Question 21

Nutrients from food are absorbed into the

Answer 21

Villi in the small intestine

Question 22

The large number of thin walled villi provides a

Answer 22

Large surface area

Question 23

Each villus contains a network of capillaires to absorb

Answer 23

Glucose and amino acids

Question 24

Each villus contains a lacteal to absorb

Answer 24

Fatty acids and glycerol

Question 25

Lacteal absorbs

Answer 25

Fatty acids and glycerol

Question 26

Capillary absorbs

Answer 26

Amino acids and glucose