Which Statement Regarding Microcirculatory Beds Is True

question 72

Multiple Choice

Which statement regarding microcirculatory beds is true?

• A) Smooth muscles in the walls of arterioles are responsible for vasoconstriction and vasodilation.
• B) Anastomoses are the one possible path from an arteriole to a venule.
• C) The walls of capillaries consist of vascular endothelium and a smooth muscle layer.
• D) Venules and arterioles are the preeminent sites of O₂ and water exchange.

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Definitions:

Center of Gravity

The point within an object or body where the gravitational force can be considered to act, crucial in matters of stability and balance.

Body Mass

A measure of body weight in relation to height, often used to assess if a person is underweight, overweight, or within a healthy weight range.

Osteoporosis

A condition characterized by weakened bones, making them fragile and more likely to break, often due to a lack of calcium or vitamin D.

Bone Density

A measurement of the amount of calcium and other minerals packed into a segment of bone, which can indicate bone strength and risk for osteoporosis.