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How many capillary beds would a molecule of CO2 found in the arteriole of the left...

How many capillary beds would a molecule of CO2 found in the arteriole of the left toe travel through before exhaled from the body
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Answer #1

Answer:- two capillary bed.

Explanation :- A molecule in arterioles of the left toe will move to capillary bed present in toe.

Capillary bed in toe acts as a site for exchange (O2 diffuse to tissue and CO2 diffuse back to blood) with tissues surrounding to it .

Capillary bed lead back to venules (small blood vessels) that flow blood into larger vein (such as inferior vena cava) eventually back to the heart.

From heart this deoxygenated blood (containing CO2 molecule) carry through pulmonary artery which lead to the capillary bed in lungs for exchange with alveoli (O2 is taken in from atmospheric air and CO2 is exhaled to atmosphere).

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