IB BIO 6.2 - The Heart

Front

What are the main components of blood?

Back

The main components of blood are red blood cells (erythrocytes), white blood cells (leukocytes), platelets, and plasma.

Front

What is the primary function of platelets?

Back

The primary function of platelets is to help stop bleeding by forming clots.

Front

What is the role of erythrocytes in the circulatory system?

Back

Erythrocytes, or red blood cells, are responsible for transporting oxygen from the lungs to the body's tissues and returning carbon dioxide from the tissues back to the lungs.

Front

What type of blood do veins carry?

Back

Veins typically carry deoxygenated blood back to the heart, except for the pulmonary veins, which carry oxygenated blood from the lungs to the heart.

Front

What type of blood do arteries carry?

Back

Arteries generally carry oxygenated blood away from the heart, except for the pulmonary artery, which carries deoxygenated blood to the lungs.

Front

What is the significance of elastic fibers in arteries?

Back

Elastic fibers in the walls of arteries allow them to stretch and recoil, which helps maintain high blood pressure and ensures continuous blood flow.

Front

What is the difference between arteries and veins in terms of structure?

Back

Arteries have thicker walls and more elastic tissue compared to veins, which have thinner walls and valves to prevent backflow.

Front

What is the function of the pulmonary artery?

Back

The pulmonary artery carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation.

Front

What is the function of the aorta?

Back

The aorta is the largest artery in the body and carries oxygenated blood from the left ventricle of the heart to the rest of the body.

Front

What is the role of the heart in the circulatory system?

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients to tissues and removing waste products.