Coronary Vessels Are Open When the Heart Is

question 126

Multiple Choice

Coronary vessels are open when the heart is

• A) contracting.
• B) relaxed.

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Definitions:

Lymphocytes

A type of white blood cell that is an integral part of the immune system, responsible for the body's defense against pathogens.

White Blood Cells

Cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.

Immune System

The body's defense mechanism against infections, diseases, and foreign substances, consisting of various cells, tissues, and organs.

Stress Hormones

Chemicals released by the body in response to stress, such as cortisol and adrenaline, which prepare the body to face a threat or flee.