3.1.1 Blood vessels

Front

What are capillaries?

Back

Capillaries are the smallest blood vessels in the body, consisting of a single layer of endothelial cells, allowing for the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

Front

What is the function of the pulmonary artery?

Back

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

Front

What is the role of the pulmonary vein?

Back

The pulmonary vein carries oxygenated blood from the lungs back to the left atrium of the heart.

Front

What is the bicuspid valve?

Back

The bicuspid valve, also known as the mitral valve, is located between the left atrium and left ventricle, allowing blood to flow from the atrium to the ventricle.

Front

What is the thickest blood vessel in the body?

Back

The thickest blood vessel is the artery, which has a thick muscular wall to withstand high pressure from the heart.

Front

What is the largest blood vessel by diameter?

Back

The largest blood vessel by diameter is the vein, which has a larger lumen compared to arteries and capillaries.

Front

What is the primary function of arteries?

Back

Arteries carry oxygenated blood away from the heart to the tissues of the body, except for the pulmonary artery which carries deoxygenated blood.

Front

What is the primary function of veins?

Back

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

Front

What is the structure of capillaries?

Back

Capillaries have walls that are one cell thick, allowing for efficient exchange of substances between blood and surrounding tissues.

Front

What is the difference between arteries and veins?

Back

Arteries have thicker walls and carry oxygenated blood away from the heart, while veins have thinner walls and carry deoxygenated blood back to the heart.