Which components make up the cardiovascular system?

Which components make up the cardiovascular system?

• A. The lungs, heart, and kidneys
• B. The heart, blood vessels, and blood
• C. The stomach, liver, and pancreas
• D. The brain, spinal cord, and nerves

Answer: (B)

Understanding what makes up the cardiovascular system is about the three essential components that keep blood moving through the body: the heart, which acts as the muscular pump; the blood vessels—arteries, veins, and capillaries—that form the circulation network; and the blood itself, the fluid that carries oxygen, nutrients, waste, and other substances to and from tissues. The lungs are part of the respiratory system, providing oxygen to blood and removing carbon dioxide; the kidneys are part of the urinary system and help regulate fluids and electrolytes; the stomach, liver, and pancreas are part of the digestive system; and the brain, spinal cord, and nerves are part of the nervous system. So, the combination that truly represents the cardiovascular system is the heart, the blood vessels, and the blood.

Understanding what makes up the cardiovascular system is about the three essential components that keep blood moving through the body: the heart, which acts as the muscular pump; the blood vessels—arteries, veins, and capillaries—that form the circulation network; and the blood itself, the fluid that carries oxygen, nutrients, waste, and other substances to and from tissues. The lungs are part of the respiratory system, providing oxygen to blood and removing carbon dioxide; the kidneys are part of the urinary system and help regulate fluids and electrolytes; the stomach, liver, and pancreas are part of the digestive system; and the brain, spinal cord, and nerves are part of the nervous system. So, the combination that truly represents the cardiovascular system is the heart, the blood vessels, and the blood.