Biology, asked by aksajoy6883, 1 year ago

why is the velocity of blood flow lowest in capillaries

Answers

Answered by nishavox
2

As the total cross-sectional area of the vessels increases, the velocity of flow decreases. Blood flow is slowest in the capillaries, which allows time for exchange of gases and nutrients. Resistance is a force that opposes the flow of a fluid. In blood vessels, most of the resistance is due to vessel diameter.


Answered by mindfulmaisel
2

due to the less amount of surface area of the capillaries the velocity of the blood flow is lowest in the capillary

Explanation:

  • blood vessels can be of three types. They are the arteries veins and capillaries. Of the three the surface area of cross-section is released in case of the capillaries. As a result the blood flow of them is reduced .
  • moreover the capillaries lie away from the heart and hence the force of contraction is less as compared to that of arteries in for this reason also the velocity of flow of blood decreases.
  • Also there is exchange of gases in the capillaries between the the body tissue and the vascular system in blood should flow much slowly in the system system

To know more about the capillaries,

What is the important of capillaries in human body? Brainly.in

https://brainly.in/question/5201832

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