Question

According to Bernoulli's principle, what is the expected relationship between velocity and pressure in the cardiovascular system?

a. Directly proportional
b. Inversely proportional
c. Constant
d. Unrelated

Why does the pressure in the aorta and arteries fluctuate despite a constant vessel diameter?
a. Pulsatile flow from the heart
b. Bernoulli's principle violation
c. Vasoconstriction in arterioles
d. Systolic and diastolic changes

Where is blood pressure typically measured in the human circulatory system?
a. Capillaries
b. Venules
c. Brachial artery
d. Aorta

How does vasoconstriction in arterioles affect pressure in the microvasculature, according to Bernoulli's principle?
a. Increases pressure
b. Decreases pressure
c. No effect on pressure
d. Converts pressure to velocity

What happens to blood flow and pressure in areas subject to vasoconstriction in the microvasculature?
a. Increase in both flow and pressure
b. Decrease in both flow and pressure
c. Increase in flow, decrease in pressure
d. Decrease in flow, increase in pressure

Answer 1

According to Bernoulli's principle, there is an inversely proportional relationship between velocity and pressure in the cardiovascular system. Blood pressure is commonly measured in the brachial artery, and vasoconstriction in arterioles increases pressure but decreases blood flow in the microvasculature.

Step-by-step explanation:

According to Bernoulli's principle, the expected relationship between velocity and pressure in the cardiovascular system is inversely proportional.

As the velocity of blood flow increases, the pressure within vessels typically decreases. The fluctuation of pressure in the aorta and arteries despite a constant vessel diameter is due to pulsatile flow from the heart, involving systolic and diastolic changes.

Blood pressure is typically measured in the brachial artery within the human circulatory system. When vasoconstriction happens in arterioles, according to Bernoulli's principle, it would increase pressure in the microvasculature, which is due to a reduced diameter causing an increase in resistance.

Vasoconstriction in the microvasculature leads to a decrease in blood flow and an increase in pressure, as the arterioles are a primary site of resistance and regulation of blood pressure.