Human circulatory system

Front

What is the main function of the heart?

Back

The heart pumps blood throughout the body, delivering oxygen and nutrients while removing waste products.

Front

What are the four main chambers of the heart?

Back

The four main chambers are the left atrium, right atrium, left ventricle, and right ventricle.

Front

What is the role of the right ventricle?

Back

The right ventricle pumps deoxygenated blood to the lungs for oxygenation.

Front

What is the role of the left ventricle?

Back

The left ventricle pumps oxygenated blood to the rest of the body.

Front

What are heart valves?

Back

Heart valves are structures that ensure the unidirectional flow of blood through the heart.

Front

What is the purpose of valves in veins?

Back

Valves in veins prevent backflow of blood, especially when blood pressure is low.

Front

What is blood plasma?

Back

Blood plasma is the liquid component of blood, making up about 55% of its volume.

Front

What is the most abundant component of blood plasma?

Back

Water is the most abundant component, accounting for about 92% of blood plasma.

Front

What is the function of red blood cells?

Back

Red blood cells transport oxygen from the lungs to the body's tissues and carry carbon dioxide back to the lungs.

Front

What is the function of white blood cells?

Back

White blood cells are part of the immune system and help fight infections.