Human Gas Exchange

Question 1

Trachea function and adaptation?

Answer 1

Supported by cartilage to stop collapsing

Question 2

Bronchus function and adaptation?

Answer 2

supported by cartilage to avoid collapsing

Question 3

Bronchioles function and adaptation?

Answer 3

muscles lined with epithelial cells so they can constrict to control air flow

Question 4

Alveoli function and adaptation?

Answer 4

elastic fibres to allow them to stretch as they are filled with air

Question 5

Diaphragm function and adaptation?

Answer 5

muscle that contracts during inhalation and relaxes during exhalation

Question 6

Intercostal muscle function and adaptation?

Answer 6

muscle that contracts and relaxes during inhalation and exhalation

Question 7

What happens during inhalation?

Answer 7

— External intercostal muscles contract
— Volume of throax increases
— The pressure of air in the atmosphere is higher than the pressure inside the thorax so oxygen diffuses into the lungs

Question 8

What happens during exhalation?

Answer 8

— Intercostal muscles contract
— Volume of throax decreases
— The pressure of air in the atmosphere is lower than the pressure inside the thorax so oxygen diffuses out of the lungs