What term describes the overall process of gas exchange between air and blood, including external and internal respiration?

What term describes the overall process of gas exchange between air and blood, including external and internal respiration?

• A. Respiration
• B. Excretion
• C. Afebrile
• D. Axillary

Answer: (A)

Gas exchange between the air we breathe and the blood is called respiration. It covers both external respiration—the transfer of oxygen from the lungs into the blood and the removal of carbon dioxide from blood into the air—and internal respiration, where oxygen moves from blood to body tissues and carbon dioxide moves from tissues into blood. This whole process embodies how gases are exchanged across the respiratory system. Other options don’t describe this exchange: excretion is waste removal, afebrile means without fever, and axillary relates to the underarm and isn’t a physiological process. (Note: cellular respiration is the cellular use of oxygen to produce energy, but the broad air-blood gas exchange is respiration.)

Gas exchange between the air we breathe and the blood is called respiration. It covers both external respiration—the transfer of oxygen from the lungs into the blood and the removal of carbon dioxide from blood into the air—and internal respiration, where oxygen moves from blood to body tissues and carbon dioxide moves from tissues into blood. This whole process embodies how gases are exchanged across the respiratory system. Other options don’t describe this exchange: excretion is waste removal, afebrile means without fever, and axillary relates to the underarm and isn’t a physiological process. (Note: cellular respiration is the cellular use of oxygen to produce energy, but the broad air-blood gas exchange is respiration.)