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How does changing the diameter of arterioles control blood pressure and flow?
Wiki User
∙ 11y ago
Increased diameter of the arterioles decreases rather increases blood pressure. The heart rate also lowers as the heart does not have to pump blood as hard to get it to flow through the wider the arterioles.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoArterioles (and arteries) are lined with a type of muscle called smooth muscle. They are designed to contrict under certain circumstances in response to environmental conditions that the body encounters. Most commonly, this refers to temperature changes. As the temperature rises, the muscles relax causing additional blood to flow to the extremeties so that the body can more efficiently cool itself. This will DECREASE blood pressure, since the heart is now pumping the same amount of blood through a larger area. The opposite is true when it's cold out.
These muscles will also constrict in response to severe blood loss. In the case of severe bleeding, blood pressure will decrease since there is less blood being pumped through the same volume. Smooth muscles in arteries and arterioles will contract, thereby decreasing the volume in which the blood can flow and, hopefully, keeping blood pressure high enough to sustain life.
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What Small vessels are involved in the control of blood pressure and distribution of blood ar?
arterioles
In which part of the circulatory system does the greatest pressure drop occur?
The greatest pressure drop in the circulatory system occurs in the arterioles. Arterioles are small, muscular blood vessels that regulate blood flow and control blood pressure. As blood travels from the arteries to the capillaries, the arterioles cause a significant decrease in pressure to ensure proper exchange of nutrients and waste between the blood and tissues.
Why are there more arterioles in mammals than main arteries?
Arterioles carry bloo, under lower pressure than arteries, from arteries to capillaries. They also control the flow of blood between the two. In mammals main arteries are located primarily in and around the heart, whereas arterioles connect these to the capillaries
Can you control sound wave direction by changing the direction and presure of air?
You can control sound wave direction, by changing the direction and pressure of air.
What vessels control the flow of blood through the capillaries?
Arterioles.
How do arterioles control the desired blood flow to a tissue?
your an idot
Does the diameter of a telescope control its magnification?
No, you can change the magnification of the telescope by simply changing the eyepiece. The two most important powers of the telescope, light-gathering power and resolving power, depend on the diameter of the telescope, but it does not control the magnification.
Do arterioles have the ability to constrict and dialate?
The Arterioles, which are smaller branches of the Arteries need to expand and contract. Reason being, the Arterioles are what control / regulate our blood pressure. When blood enters the Arterioles from the Arteries, they either contract or expand, which alters the amount and resistance of blood flow through them. If they remain contracted for any reason, this will make the heart pump harder due to the resistance, which will result in Hypertension, or high blood pressure. The arterioles, which are made up of smooth muscle, also carry blood to your capillaries, where the exchange of gases (O2 & CO2) takes place. O2 = Oxygen which we breathe in CO2 = Carbon Dioxide which we exhale
How the muscles in an artery regulate blood flow?
There are no muscles in arteries. Arterioles have muscles which can close them, but which has no normal flow control. (Used is stress/shock conditions only) Capillaries have a muscle which can stop all flow through it - it responds to oxygen pressure and is the ultimate control of blood flow.
How do the muscles in an artery regulate blood flow?
There are no muscles in arteries. Arterioles have muscles which can close them, but which has no normal flow control. (Used is stress/shock conditions only) Capillaries have a muscle which can stop all flow through it - it responds to oxygen pressure and is the ultimate control of blood flow.
What are four ways that a chemist can control the rates of chemical reactions?
By changing concentration, temperature; pressure and volume (in the case of gases).
What type of muscles are your arteries?
Arteries are composed mainly of smooth muscle cells, also known as vascular smooth muscle. These muscle cells are responsible for regulating the diameter and constriction of the arteries, allowing for the control of blood flow and pressure. Additionally, arteries also have a layer of connective tissue and endothelial cells that line the inner surface.
