Oxygen in lungs ultimately reaches the _______.

Alveoli

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Trachea

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Bronchus

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Bronchioles

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Solution

The correct option is A
Alveoli

Oxygen in lungs ultimately reaches alveoli as it is the place where the exchange of $O_{2}$ and ${C O}_{2}$ takes place. The exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.The inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

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Similar questions

During respiration, the exchange of gases takes place in :
(a) bronchi
(b) alveoli
(c) bronchioles
(d) trachea

Where in the respiratory system does oxygen, from the air breathed in pass into the blood.

Option 1 : trachea

Option 2 :bronchi

Option 3 : bronchioles

OpOpti 4 : alveoli

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