Overview of the function of the cardiovascular system Flashcards

1
Q

What is the primary function of the cardiovascular system?

A

The cardiovascular system delivers oxygen and nutrients to tissues, removes waste products, transports hormones, and regulates temperature and pH balance.

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2
Q

Why is pressure important in the cardiovascular system?

A

Pressure drives blood flow, ensuring that oxygen and nutrients reach tissues while waste products are removed efficiently.

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3
Q

How does resistance affect blood flow in the cardiovascular system?

A

Resistance opposes blood flow, primarily influenced by vessel diameter, length, and blood viscosity, regulating perfusion to different organs.

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4
Q

What is the role of capacitance in the cardiovascular system?

A

Capacitance refers to the ability of blood vessels, especially veins, to store and regulate blood volume, maintaining stable circulation.

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5
Q

Why is it important that vascular beds are arranged in parallel?

A

Parallel arrangement reduces overall resistance and allows independent regulation of blood flow to different organs.

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6
Q

What is the significance of vascular beds arranged in series?

A

Series arrangement increases resistance and ensures sequential blood flow through specific organs, such as the hepatic portal circulation.

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7
Q

What is the function of elastic arteries?

A

Elastic arteries, like the aorta, stretch during systole and recoil during diastole to maintain continuous blood flow.

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8
Q

How do muscular arteries function in circulation?

A

Muscular arteries distribute blood to specific organs and regulate blood flow through vasoconstriction and vasodilation.

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9
Q

What role do resistance vessels play in the cardiovascular system?

A

Resistance vessels, primarily arterioles, control blood pressure and flow distribution by adjusting their diameter.

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10
Q

Why are capacitance vessels important?

A

Capacitance vessels, mainly veins, store large volumes of blood and help regulate venous return and cardiac output.

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