If a Physician Hears Two "Lub" Sounds Instead of One

question 69

Multiple Choice

If a physician hears two "lub" sounds instead of one, then which of the following conditions is true?

• A) The semilunar valves are not closing simultaneously.
• B) The atrial blood is flowing backward and causing the extra sound.
• C) The atrioventricular valves are not closing at the same time.
• D) The AV and semilunar valves are not closing at the same time.
• E) No such double sound has ever been heard.

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Definitions:

Melanie Klein

A pioneering figure in psychoanalysis, particularly known for her work in child analysis and her theories on the importance of fantasy, play therapy, and the early stages of child development.

Collective Unconscious

A concept in Jungian psychology referring to a part of the unconscious mind which is shared among beings of the same species and contains universal experiences.

Personal Unconscious

A Jungian concept referring to all information and experiences unique to an individual that are repressed or forgotten.

Libido

A term often used in psychology to denote the energy of the sexual drive as a component of the life instinct.