Gaseous exchange in human

Identify the parts of the respiratory system shown in the diagram.

a

b

c

d

Bronchi

Alveolus

Trachea

Diaphragm

Identify the parts involved in gas exchange.

a

b

Alveoli

Blood capillaries

Label the gases involved in the exchange process.

a

b

Oxygen

Carbon Dioxide

Compare breathing mechanisms during inhalation and exhalation

Groups:

(a) Inhalation

,

(b) Exhalation

• Volume in thoracic cavity increases

• Intercoastal muscle contracts

• Rib cages moves downwards

• Volume in thoracic cavity decreases

• Rib cage moves upwards

• Oxygen in

• Carbon dioxide out

• Intercostal muscle relaxes

Tiny air sacs for gaseous exchange . It looks like grape

• Alveolus

• Blood capillary

• Lung

• Trachea

Tags

NGSS.MS-LS1-2