Heart

Front

What is the main function of the heart?

Back

The main function of the heart is to pump blood throughout the body.

Front

What type of muscle is the heart made of?

Back

The heart is made of cardiac muscle.

Front

Is the heart an involuntary muscle?

Back

Yes, the heart is an involuntary muscle that works automatically.

Front

Does the heart always pump at the same rate?

Back

No, the heart rate can change based on activity and other factors.

Front

What does the pulmonary artery do?

Back

The pulmonary artery carries blood from the heart to the lungs, not the other way around.

Front

What is the role of the atria in the heart?

Back

The atria are the upper chambers of the heart that receive blood.

Front

What is the role of the ventricles in the heart?

Back

The ventricles are the lower chambers of the heart that pump blood out of the heart.

Front

What is the difference between oxygenated and deoxygenated blood?

Back

Oxygenated blood is rich in oxygen and is carried from the lungs to the body, while deoxygenated blood is low in oxygen and is carried from the body to the lungs.

Front

What is the heart's natural pacemaker called?

Back

The heart's natural pacemaker is called the sinoatrial (SA) node.

Front

How does exercise affect heart rate?

Back

Exercise increases heart rate to supply more oxygen to the muscles.