The Primary Functions of the Circulatory System Are

question 26

Multiple Choice

The primary functions of the circulatory system are

• A) transport oxygen.
• B) transport nutrients.
• C) remove metabolic waste.
• D) reabsorb leaking fluid.
• E) return leukocytes to the circulation.

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Definitions:

Interstitial Fluid

The fluid that surrounds the cells in tissues, providing a medium for the exchange of substances between blood and cells.

Venous End

The part of a capillary bed where blood is collected from the capillary networks into the veins, characterized by lower pressure and oxygen content compared to the arterial end.

Lower Extremities

Lower extremities refer to the limbs and structures of the lower part of the body, including the hips, thighs, legs, ankles, and feet.

Precapillary Sphincter

A band of smooth muscle that adjusts blood flow into capillaries mainly by contracting and relaxing, thereby regulating the passage of blood into tissues.