How Do Veins Prevent the Backflow of Blood Within Them

question 43

Multiple Choice

How do veins prevent the backflow of blood within them?

• A)By having thick,muscular walls
• B)Because of the tiny lumen inside them
• C)They are capable of contracting
• D)They possess flaplike valves

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Definitions:

Reaction Formation

A psychological defense mechanism where an individual unconsciously replaces unacceptable thoughts or feelings with their opposites.

Aggressive Impulses

Instinctual drives that lead individuals to act or react in a forceful or hostile manner.

Neo-Freudian

Psychologists who accepted the basic concepts of Freud's theory but modified and expanded upon them to include social and cultural aspects.

Freud's Theories

A set of psychological and psychoanalytical theories developed by Sigmund Freud that explore the functioning of the human mind, particularly the unconscious and its influence on behavior.