Circulation and Respiration

Question 24 • 2026-2027 EDGE Human Anatomy and Physiology B

Diffusion is:

Answer

the process of a concentrated substance moving into an area of lower concentration.

the rate at which oxygen is taken in by the alveoli and used by the body.

a type of cell that transports oxygen and carbon dioxide.

a cluster of air-filled sacs that move oxygen through the body.

Gas Exchange

Circulation and Respiration

Circulation and Respiration