Question

What happens to blood when it is pumped into the thin walled blood vessels of the lungs?

Answer 1

Blood vessels that enter lungs (pulmonary artery) initially carries deoxygenated blood, which, after diffusion through lung alveoli, basement membrane and blood vessels' lining(endothelium) becomes oxygenated and goes back to heart as pulmonary vein.

Answer 2

Answer:

==>The pulmonary arteries carry deoxygenated blood to the lungs, where carbon dioxide is released and oxygen is picked up during respiration. Arteries are further divided into very fine capillaries which are extremely thin-walled. The pulmonary vein returns oxygenated blood to the left atrium of the heart.

Explanation:

==>What happens to blood when it is pumped into the thin walled capillaries of the lungs?

When blood enters the small capillaries of the lung (called the pulmonary capillaries), fresh oxygen enters the blood and carbon dioxide is removed. This is called "gas exchange" or "respiration". Because this is the exchange of gases between the atmosphere and the bloodstream, it is also called "external respiration.

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