The velocity of blood flow is the lowest in capillaries because ________.
A. the capillaries have internal valves that slow the flow of blood B. the diastolic blood pressure is too low to deliver blood to the capillaries at a high flow rate C. the systemic capillaries are supplied by the left ventricle, which has a lower cardiac output than the right ventricle D. the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system

Question

23-08-2022
Biology

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The velocity of blood flow is the lowest in capillaries because ________.
A. the capillaries have internal valves that slow the flow of blood B. the diastolic blood pressure is too low to deliver blood to the capillaries at a high flow rate C. the systemic capillaries are supplied by the left ventricle, which has a lower cardiac output than the right ventricle D. the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system

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amardeeppsingh176 amardeeppsingh176 · Answer 1 · 2022-08-27T09:17:02+02:00

The total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system.

Capillaries are the delicate blood vessels which are present in our body. They transport the blood, nutrients, and oxygen to the cells of our body.

Capillaries complete the circulatory system by connecting arteries to veins:

Arteries carry oxygen-rich blood from the heart to your organs.

Veins help the body remove low-oxygen blood and waste.

Capillaries are very thin, approximately 5 micrometres in diameter and composed of only two layers of cells. The inner layer is made up of endothelial cells with an outer layer of epithelial cells. They are so small that red blood cells need to flow through them single file.

The blood cells compress themselves and change their shape to fit right through the capillaries.

To know more about Blood vessels, refer to this link:

https://brainly.com/question/14502019

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