Which Structural Feature of Cardiac Muscle Cells Enables Action Potentials

question 63

Multiple Choice

Which structural feature of cardiac muscle cells enables action potentials to travel rapidly from cell to cell?

• A) mitochondria
• B) desmosomes
• C) gap junctions
• D) myofibrils
• E) myoglobin

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Definitions:

Unconscious Incestuous Feelings

Deep-seated sexual feelings within the unconscious mind towards a family member, as proposed in psychoanalytic theory.

Latency Stage

A phase in Freud's psychosexual development theory occurring between the ages of six and puberty during which sexual impulses and activities are suppressed or dormant.

Phallic Stage

A stage in Freudian psychosexual development, occurring from ages 3 to 6, wherein the child's libido centers upon their genitalia.

Anal Stage

The Anal Stage is the second stage in Freud's theory of psychosexual development, occurring from about 18 months to 3 years of age, where the focus of pleasure is on the control of bowel and bladder elimination.