Gaseous exchange in human

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

a

b

c

d

Trachea

Bronchi

Diaphragm

Alveolus

Identify the parts involved in gas exchange.

a

b

Blood capillaries

Alveoli

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

• Rib cage moves upwards

• Volume in thoracic cavity increases

• Oxygen in

• Intercoastal muscle contracts

• Volume in thoracic cavity decreases

• Carbon dioxide out

• Intercostal muscle relaxes

• Rib cages moves downwards

Tiny air sacs for gaseous exchange . It looks like grape

• Alveolus

• Blood capillary

• Lung

• Trachea

Tags

NGSS.MS-LS1-2