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The blood vessels are made up of an internal layer of muscle fibers, which are capable of contraction and relaxation. The contraction of the muscles reduces the lumen size of the vessel, making the blood flow faster while relaxation allows more room for blood to flow, thus blood flow rate is reduced.

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13y ago
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13y ago

The heart is a central pump that produces the force that causes the blood to flow through the body.

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12y ago

The cardiovascular system is a closed system. So when the heart pumps it a pushes blood through the blood vessels at the same pressure it was pumped out.

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8y ago

Blood reaches all parts of the body via the circulatory system. The heart provides pumping action that moves blood through the extensive network of blood vessels.

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12y ago

The heart

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Q: How does the body control blood vessel size and blood flow?
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Related questions

Why would blood vessel radius have a larger effect on the body than vessel length?

A blood vessel's radius has a larger effect on the body than the vessels length because more blood can flow through a larger blood vessel. A change in the radius will have more of a affect.


What is faster blood flow in the center of a large vessel or blood flow along the walls of a blood vessel?

Blood flow in the center of a large vessel is faster because the walls of the blood vessel may have a buildup of cholesterol on them.


How does the control of blood flow to the skin for the purpose of regulating body temperature differ from the control of nutrient blood flow to skin cells?

yes


In the body where does the driving pressure for fluid flow come from?

The pressure difference between the two ends of a blood vessel is the driving force behind blood flow.


What is the effect of increased vessel length on blood flow?

The longer the vessel is the more friction it applies on the passing blood, the less the blood flow is.


Which blood vessel does blood flow with a pulse?

artery


What makes the blood flow inside the tubes or blood vessel?

Contractions and relaxation of heart chambers make the blood flow inside the tubes or blood vessel.


What is the affect on blood flow on the radius vessels?

The relationship between blood flow through a vessel and the radius of the vessel can be expressed as BF=1/pi r4 (where pi is equal to 3.14.....). So a change in the radius of a vessel has a large effect on the blood flow through the vessel.


How does the blood flow when a vessel has been punctured?

In the same way when you puncture a hole in a garden hose, some water will flow out but some will stay in the hose. The heart continues pumping blood, and the cut in the blood vessel will eventually be plugged by your body's automatic clotting mechanism.


Does muscular arteries control the blood flow to different body areas?

No.


Which blood vessel will allow a forceful flow of the blood?

cappillaries


Which blood vessel will allow a force flow of blood?

cappillaries