The "Lub" Heart Sound Is Due to the

question 25

Multiple Choice

The "lub" heart sound is due to the

• A) onward rush of blood to the heart.
• B) contraction of aortic muscle tissue.
• C) closing of the semilunar valves.
• D) closing of the atrioventricular valves.
• E) the recoil of the aorta following the ventricle contraction.

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Definitions:

Striving for Superiority

A concept in psychology suggesting that a primary motivation for humans is to overcome obstacles and strive to improve themselves.

Oral Stage

In psychoanalytic theory, the first stage of psychosexual development, where a child's pleasure centers around the mouth.

Psychosexual Development

Psychosexual Development is a Freudian theory that proposes individuals pass through a series of stages from childhood to adulthood, where pleasure focuses on different parts of the body.

Superego

The superego is a component of Sigmund Freud's psychoanalytic theory, acting as the ethical component of the personality and providing moral standards by which the ego operates.