Extensions of the _____ of Veins Form Valves That Help

question 72

Multiple Choice

Extensions of the _____ of veins form valves that help prevent the backflow of blood.

• A) tunica interna (intima)
• B) tunica media
• C) tunica externa

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Definitions:

Blood Pressure

The force exerted by circulating blood upon the walls of blood vessels, a crucial indicator of cardiovascular health.

Cholesterol Levels

The amount of cholesterol present in the bloodstream, important for cell membrane structure but can contribute to heart disease when imbalanced.

Psychoactive Drug

Any substance that alters mood, perception, or thought; called a controlled substance if approved for medical use.

Illicit Drug

Substances whose production, sale, or use is prohibited by law, including drugs that are subject to drug control and prohibition policies.