Question

58 in both pulmonary and systemic circulation, gas exchange occurs at the multiple choice arteries. venules. capillaries.

Explanation:

Capillaries have thin walls that allow for efficient diffusion of oxygen and carbon - dioxide between the blood and surrounding tissues or alveoli in the lungs. Arteries carry oxygen - rich blood away from the heart and are not the main site of gas exchange. Venules collect deoxygenated blood from capillaries and are also not the site of gas exchange.

Answer:

C. capillaries