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Mechanisms of Blood Flow Control

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Questions and Answers

What is the primary mechanism of acute blood flow control?

Long-term changes in blood vessel sizes

Increase in the number of blood vessels

Rapid local vasodilation or vasoconstriction (correct)

Changes in oxygen availability

Which theory proposes that tissue metabolism influences local blood flow by affecting oxygen availability?

Vasodilator Theory

Controlled Flow Theory

Nutrient Lack Theory

Oxygen Lack Theory (correct)

What distinguishes long-term control of blood flow from acute control?

Maintenance of appropriate local tissue blood flow

Physical sizes and numbers of blood vessels (correct)

Proportion to the needs of the tissues

Speed of changes in flow

How do long-term changes in blood vessel sizes and numbers contribute to better control of blood flow?

<p>By adjusting flow proportionally to tissue needs</p> Signup and view all the answers

Which component plays a vital role in achieving rapid maintenance of appropriate local tissue blood flow during acute control?

<p>Metarterioles</p> Signup and view all the answers

Mechanisms of Blood Flow Control

Choose a study mode

Podcast

Questions and Answers

What is the primary mechanism of acute blood flow control?

Which theory proposes that tissue metabolism influences local blood flow by affecting oxygen availability?

What distinguishes long-term control of blood flow from acute control?

How do long-term changes in blood vessel sizes and numbers contribute to better control of blood flow?

Which component plays a vital role in achieving rapid maintenance of appropriate local tissue blood flow during acute control?

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