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Peripheral resistance is the force against blood flow. In most cases, an increase in peripheral resistance would be caused by an increase in vasoconstriction, which would decrease blood flow. Other factors can influence vasoconstriction, such as circulating angiotensin II levels, cortisol levels, drugs such as cocaine and other adrenergic agonists, blood volume, atherosclerosis, emboli, renal diseases and increased intra-cranial pressure. An increase in blood pressure will also be caused by vasoconstriction and the mentioned factors.

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What is the explanation for the term total peripheral resistance?

Total peripheral resistance is the sum of the resistance of all peripheral vasculature in the systemic circulation.


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Both, peripheral resistance decreases and cardiac output increases.


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Does dehydration increase peripheral resistance?

yes


What center in the medulla can alter peripheral resistance?

Hypothalamus


What is the event primarily responsible for peripheral resistance?

Constriction of arterioles


Peripheral resistance is maintained by increasing or decreasing the size of?

Increasing


How does blood viscosity affect blood flow?

Peripheral resistance


Where does regulation of peripheral resistance occurs most often?

Arterioles


Would vasoconstriction decrease peripheral resistance?

No, vasoconstriction would increase peripheral resistance. When blood vessels constrict, the diameter of the blood vessels becomes smaller, which increases resistance to blood flow. This can lead to an increase in blood pressure.