In the Condition Known as Complete Heart Block, What Happens

question 191

Multiple Choice

In the condition known as complete heart block, what happens?

• A) Coronary arteries are blocked by plaques, preventing blood and oxygen from reaching the myocardial contractile cells.
• B) Electrical signals from the SA node never reach the ventricles, so the contraction of the atria is not coordinated with the contraction of the ventricles.
• C) The fibrous skeleton of the heart breaks down, interfering with the passage of blood from the atria to the ventricles.
• D) The mitral valve leaflets calcify and close, preventing blood from being pumped efficiently by the left side of the heart.
• E) Blood flow through the foramen ovale is blocked.

---

Definitions:

Mental Disorders

Medical states marked by changes in cognition, emotions, or actions that lead to discomfort or reduced capability.

Organic Causes

Physical or biological factors that lead to a medical condition or disease.

Public Health System

The network of governmental and non-governmental organizations, policies, and initiatives aimed at preventing disease, prolonging life, and promoting health through organized efforts and informed choices of society.