The primary site of exchange of gases and nutrients is the:
Show answer and explanation
Correct answer: Capillaries and venules
Capillaries have thin walls that allow diffusion of gases and nutrients. They form extensive networks within tissues.
Keep practicing
More Exercise Effects on Heart questions
- Which mechanism contributes most to venous return during exercise?
- According to the Frank-Starling law, increased venous return results in:
- Which blood vessel acts as the primary resistance vessel?
- The QRS complex of the ECG corresponds to:
- Which factor decreases heart rate?
- Which condition is characterized by elevated arterial blood pressure?