CARDIOVASCULAR SYSTEM

Front

What does the T wave on an ECG printout represent?

Back

Relaxation of the ventricles.

Front

What occurs during atrial systole and ventricular diastole?

Back

Atrial systole is the contraction of the atria while the ventricles are relaxed.

Front

Why are the walls of the left ventricle thicker than those of the right ventricle?

Back

Blood from the left ventricle is pumped throughout the entire body, requiring more force.

Front

What is the myocardium?

Back

The middle layer of the heart.

Front

What is the term for the red blood cell that transports oxygen and carbon dioxide?

Back

Erythrocyte.

Front

What is the function of the left ventricle?

Back

To pump oxygenated blood to the entire body.

Front

What is the function of the right ventricle?

Back

To pump deoxygenated blood to the lungs for oxygenation.

Front

What are the three layers of the heart?

Back

Epicardium (outer layer), myocardium (middle layer), endocardium (innermost layer).

Front

What is the role of erythrocytes in the cardiovascular system?

Back

To transport oxygen from the lungs to the body and carbon dioxide from the body to the lungs.

Front

What is the significance of the heart valves?

Back

They ensure unidirectional blood flow through the heart chambers.