Question

Oxygen from the air enters the blood stream at what location?
Cardiac notch
Pulmonary vein
Alveoll
Paranasal sinuses​

Answer 1

Answer : Alveoli

Explanation : There's a very intimate contact of blood capillaries with the alveoli, the reason exchange of gas takes place easily.

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Answer 2

Answer: The correct answer to this question is Alveoli.

Explanation:

Inside the air sacs or alveoli which are present in the lungs in our body, oxygen gets across paper-thin walls to minuscule veins called capillary and into your blood. A protein called hemoglobin in the red blood cells then hefts the oxygen around your body. Simultaneously, carbon dioxide that is broken down in the blood emerges from the vessels back up air sacs, fit to be inhaled out.

Blood with new oxygen is conveyed from your lungs to the left half of your heart, which push blood around your body through the supply routes.

Blood without oxygen returns through the veins, to the right half of your heart. From that point it is siphoned to your lungs so you can inhale out the carbon dioxide and take in more oxygen. The organs of the respiratory framework ensure that oxygen enters our bodies and carbon dioxide departs our bodies.

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