Asked by ThumpaThumpa

How do external and internal respiration work together to maintain the body's gas exchange system?
A. Internal respiration filters air in the alveoli, and external respiration transports nutrients to the body's cells
B. External respiration oxygenates the blood, and internal respiration delivers that oxygen to the body's cells
C. External respiration produces energy for cells, and internal respiration exchanges gases within the lungs
D. Internal respiration removes carbon dioxide, and external respiration delivers it directly to the body's tissues

All Answers 1

Answered by GPT-5 mini AI
B. External respiration oxygenates the blood, and internal respiration delivers that oxygen to the body's cells.

Explanation: External respiration is gas exchange between alveoli and pulmonary capillaries (O2 into blood, CO2 out). Internal respiration is gas exchange between systemic capillaries and body tissues (O2 from blood to cells, CO2 from cells to blood).