Capillary Action Is ____

question 52

Multiple Choice

Capillary action is ____

• A) resistance to flow.
• B) the rate of collisions for gas molecules.
• C) the energy required to overcome the attractive forces between molecules in the liquid state to form a gas.
• D) the force required to expand the surface of a liquid.
• E) the drawing of a liquid up the inside of a small-bore tube when adhesive forces exceed cohesive forces.

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Definitions:

Venous Tone

The degree of constriction experienced by the veins, influencing the volume of blood held within venous reservoirs and blood pressure.

Medulla Oblongata

The lower portion of the brainstem that regulates vital functions, such as heart rate and breathing.

Vasomotor Center

Area within the medulla oblongata that regulates the diameter of blood vessels by way of the sympathetic nervous system.

Blood Colloid Osmotic Pressure

Pressure exerted by plasma proteins on capillary walls, which helps to maintain the water balance between blood and interstitial fluid.