Which of the following is NOT a type of blood vessel?

Which of the following is NOT a type of blood vessel?

• A. Ventricles
• B. Veins
• C. Arteries
• D. Capillaries

Answer: (A)

Distinguishing heart chambers from blood vessels helps you see why ventricles aren’t blood vessels. A blood vessel is a tube that carries blood through the body, and the main types are arteries, veins, and capillaries. Ventricles are muscular chambers inside the heart that pump blood into the arteries; they’re part of the heart, not vessels themselves. The left ventricle sends oxygen-rich blood into the aorta to reach the body, while the right ventricle pushes blood to the lungs via the pulmonary artery. Veins return blood to the heart, arteries carry blood away from the heart, and capillaries are the tiny vessels where exchange with tissues occurs. So ventricles do not fit the category of a blood vessel.

Distinguishing heart chambers from blood vessels helps you see why ventricles aren’t blood vessels. A blood vessel is a tube that carries blood through the body, and the main types are arteries, veins, and capillaries. Ventricles are muscular chambers inside the heart that pump blood into the arteries; they’re part of the heart, not vessels themselves. The left ventricle sends oxygen-rich blood into the aorta to reach the body, while the right ventricle pushes blood to the lungs via the pulmonary artery. Veins return blood to the heart, arteries carry blood away from the heart, and capillaries are the tiny vessels where exchange with tissues occurs. So ventricles do not fit the category of a blood vessel.