Biology Test: Alveoli and Pulmonary Gas Exchange

Lungs

Kidneys

Heart

Liver

It is converted into oxygen

It is stored for future use

It diffuses into the bloodstream

It is released as waste during exhalation

Pump blood to the body

Exchange gases

Digest food

Produce hormones

Internal respiration

Digestion

External respiration

Circulation

Collagen fibers

Elastic fibers

Type I pneumocytes

Smooth muscle cells

Through the trachea

Through the bronchi

Through the bronchioles

Through the alveolar ducts

Respiration

Ventilation

Circulation

Diffusion

Exchange of gases between the blood and tissues

Exchange of gases between the alveoli and the bloodstream

Exchange of gases between the stomach and the bloodstream

Exchange of gases between the brain and the bloodstream

Oxygen

Carbon dioxide

Nitrogen

Hydrogen

By controlling the diameter of blood vessels in the lungs

By adjusting the concentration of surfactant in the alveoli

By responding to changes in carbon dioxide levels in the blood

By producing more red blood cells