contestada

Where does oxygen move from the respiratory system to the circulatory
system?
A. In the pulmonary artery
B. In the vena cava
C. In the alveoli
D. In the liver

Respuesta :

Answer: Alveoli

Explanation: Alveoli of lungs are surrounded by extensive blood capillaries. The partial pressure of oxygen in the alveoli is higher than the blood entering the pulmonary capillaries, hence oxygen moves into the blood. Carbon dioxide in the lungs simultaneously diffuse out of the blood into the alveolar space.

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Oxygen moves from the respiratory system to the circulatory system in the alveoli. The correct option is C.

What are alveoli?

Alveoli are tiny round sac-like structures present at the end of the bronchioles. Bronchioles are branch structures present in the lung, they are the main site of exchange of oxygen and carbon dioxide.

The transfer of oxygen from the respiratory system to the circulatory system is done by alveoli.

Thus, the correct option is C. In the alveoli.

Learn more about alveoli, here:

https://brainly.com/question/21341368

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