Question

gas exchange between air in the alveoli and blood in pulmonary capillaries is called

external respiration

cellular respiration

internal respiration

Explanation:

• External respiration: It occurs in the lungs where gas exchange (oxygen and carbon dioxide) takes place between the alveoli and the pulmonary capillaries.
• Cellular respiration: This is the process within cells where glucose is broken down to produce energy (ATP), not related to gas exchange in the lungs.
• Internal respiration: Refers to gas exchange between the blood in systemic capillaries and the body's tissues, not in the pulmonary system.

Answer:

external respiration