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What would not result in thedilation of the feeder arterioles and opening of the precapillary sphincters in the systemic capillary beds?
Wiki User
∙ 11y ago
a local increase in pH
Wiki User
∙ 11y ago
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What would not result in the dilation of the feeder arterioles and opening of the precapillary sphincters in systemic capillary beds?
a local increase in pH
How do precapillary sphincters help regulate blood pressure and body temperature?
the Precapillary Sphincters control blood pressure and body temperature by regulating the flow of blood to the capillary bed.
What structures in capillary beds open to allow the capillaries to perfuse with blood?
precapillary sphincters
Precapillary sphincter is used for what purpose?
Precapillary sphincters are small, ring-like muscles that can close or open parts of a capillary bed, depending on the oxygen and nutrient demands for the tissue
The structures composed of smooth muscle that direct the flow through capillary bed are called?
precapillary sphincters
What is the function of precapillary sphincters?
The precapillary sphincter reduces or stops the flow of blood into the capillary when its smooth muscles contract. Its relaxation dilates the opening and allows blood to enter the capillary at a faster rate. The precapillary sphincters open when carbon dioxide levels rise as the tissues need more oxygen. They close when carbon dioxide levels decrease or when the body is under sympathetic stimulation.
What is the metarteriole?
A Metarteriole (or arterial capillary or precapillary sphincter) is a short vessel(s) that link arterioles and capillaries. Instead of a continuous tunica media, they have individual muscle cells placed a short distance apart, each forming a precappilary sphincter that encircles the entrance to one capillary. Constriction of these sphincters reduces or shuts off blood flow through their respective capillaries and diverts blood to tissues or organs elsewhere.
What general type of blood vessel that transports blood from one capillary to another capillary?
From the heart the blood moves through the Artirioles, through the systemic capillaries, through the precapillary sphincters to the Venules, and back to the heart. Otherwise they are generally just called capillaries
Where does a capillary arise from?
Arterioles
What are Capillary beds fed by?
Arterioles.
The arteries that directly feed into the capillary beds are called?
arterioles
What is the meaning of arterioles?
Arterioles are very small arteries which lead from arteries in to a capillary bed where gases, wastes and nutrients are exchanged.
