The Timing of the Spread of the Action Potential from Atrium

question 83

Multiple Choice

The timing of the spread of the action potential from atrium to ventricle is controlled by the

• A) sinoatrial node.
• B) atrioventricular node.
• C) Purkinje fibers.
• D) bundle of His.
• E) ventricular mass.

---

Definitions:

Unconscious

Refers to the part of the mind that is inaccessible to the conscious mind but that affects behaviors and emotions.

Mental Processes

Internal cognitive operations that include thinking, reasoning, and problem-solving.

Alcohol Abuse

The harmful or hazardous use of alcohol that may lead to social, interpersonal, or health consequences.

Strong Ego

Refers to a well-developed sense of self that is able to effectively deal with the demands of reality, mediate between one's instincts and the expectations of society.