Factors Influencing Blood Flow

What is the primary function of the cardiovascular system?

• To digest food

• To transport nutrients and oxygen to cells

• To produce hormones

• To store energy

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Which of the following factors can increase blood pressure?

• Vasodilation

• Decreased blood viscosity

• Hypertension

• Low salt intake

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Explain how vasoconstriction affects blood flow and blood pressure.

• It decreases blood flow and increases blood pressure.

• It increases blood flow and decreases blood pressure.

• It decreases both blood flow and blood pressure.

• It increases both blood flow and blood pressure.

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Identify the term used to describe the thickening of blood that can affect blood flow.

• Vasodilation

• Hypertension

• Blood viscosity

• Vasoconstriction

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How does vasodilation influence blood flow and blood pressure?

• It decreases blood flow and increases blood pressure.

• It increases blood flow and decreases blood pressure.

• It decreases both blood flow and blood pressure.

• It increases both blood flow and blood pressure.

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Which disease is characterized by consistently high blood pressure?

• Diabetes

• Hypertension

• Anemia

• Asthma

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Describe how blood viscosity affects the cardiovascular system.

• Higher viscosity decreases resistance and increases blood flow.

• Higher viscosity increases resistance and decreases blood flow.

• Lower viscosity increases resistance and decreases blood flow.

• Lower viscosity decreases resistance and increases blood flow.

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What is the effect of atherosclerosis on blood flow?

• It increases blood flow by widening the arteries.

• It decreases blood flow by narrowing the arteries.

• It has no effect on blood flow.

• It increases blood flow by reducing blood viscosity.

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Which of the following is a direct result of vasoconstriction?

• Increased blood flow

• Decreased blood pressure

• Increased blood pressure

• Decreased heart rate

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How does hypertension affect the cardiovascular system over time?

• It strengthens the heart and improves blood flow.

• It can lead to heart disease and damage to blood vessels.

• It reduces blood viscosity and improves circulation.

• It has no long-term effects on the cardiovascular system.

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