Cardiovascular System

Front

What creates the 'lub dub' heart sounds?

Back

The 'lub dub' heart sounds are created by the closing of the heart valves.

Front

Which vessels carry blood away from the heart?

Back

Arteries carry blood away from the heart.

Front

What is the average blood pressure in adults?

Back

The average blood pressure is 120/80 mmHg.

Front

What chamber of the heart receives oxygenated blood from the lungs?

Back

The left atrium receives oxygenated blood from the lungs.

Front

What type of circulation takes blood from the heart to the lungs and back?

Back

Pulmonary circulation takes blood from the heart to the lungs and back.

Front

What is the function of the aorta?

Back

The aorta is the main artery that carries oxygenated blood from the heart to the rest of the body.

Front

What is the role of veins in the cardiovascular system?

Back

Veins carry deoxygenated blood back to the heart.

Front

What is the significance of the sinoatrial (SA) node?

Back

The sinoatrial (SA) node is known as the heart's natural pacemaker, initiating the heartbeat.

Front

What is the difference between systolic and diastolic blood pressure?

Back

Systolic blood pressure is the pressure in the arteries during heartbeats, while diastolic blood pressure is the pressure when the heart is at rest between beats.

Front

What is the role of capillaries in the cardiovascular system?

Back

Capillaries are small blood vessels where the exchange of oxygen, carbon dioxide, nutrients, and waste occurs between blood and tissues.