Because the flow speed in your capillaries is much less than in the aorta, the total cross-section area of the capillaries considered together must be much larger than that of the aorta. Given the flow speeds noted, the total area of the capillaries considered together is equivalent to the cross-section area of a single vessel of approximately what diameter

Answers

Answer 1

Answer:

Answer:

Diameter of capillaries is 30-40 µm in diameter while on the other hand, the diameter of aorta is 4 cm.

Explanation:

The diameter of capillaries is 30-40 µm in diameter while on the other hand, the diameter of aorta is 4 cm which is the main reason for higher flow speed of the blood in the aorta as well as more blood is transported in the aorta. If the total area of the capillaries considered together is equivalent to the cross-section area of a single vessel of aorta then the flow speed of both is similar due to similar area.

Answer 2

Answer:

Final answer:

The total cross-sectional area of the capillaries considered together must be much larger than that of the aorta to allow for a slow and controlled exchange of substances between the blood and the cells. The blood velocity in the aorta is about 25 cm/s, while in the capillaries, it is about 1 mm/s. We can use the equation A = πr^2 to find the cross-sectional area of a single capillary with a velocity of 1 mm/s.

Explanation:

The total cross-sectional area of the capillaries considered together must be much larger than that of the aorta because the flow speed in the capillaries is much less than in the aorta. This allows for a slow and controlled exchange of substances between the blood and the cells in the capillaries. The blood velocity in the aorta is about 25 cm/s, while in the capillaries, it is about 1 mm/s. If we assume the capillaries have a cylindrical shape, we can use the equation A = πr^2 to find the cross-sectional area of a single capillary with a velocity of 1 mm/s.

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