Which elements comprise the cardiovascular system?

Which elements comprise the cardiovascular system?

• A. Muscles and bones
• B. Heart, blood vessels, veins, arteries, capillaries
• C. Digestive organs
• D. Lungs and Trachea

Answer: (B)

The cardiovascular system is made up of the heart and the network of blood vessels that circulate blood throughout the body. This includes the heart itself and the vessels that transport blood: arteries carry blood away from the heart, veins bring it back, and the tiny capillaries are where actual exchange of oxygen, nutrients, and wastes occurs. The group described—heart, blood vessels, veins, arteries, and capillaries—covers the essential components that work together to move blood and sustain circulation. The other options point to different body systems (musculoskeletal, digestive, and respiratory), which interact with the cardiovascular system but are not what defines it.

The cardiovascular system is made up of the heart and the network of blood vessels that circulate blood throughout the body. This includes the heart itself and the vessels that transport blood: arteries carry blood away from the heart, veins bring it back, and the tiny capillaries are where actual exchange of oxygen, nutrients, and wastes occurs. The group described—heart, blood vessels, veins, arteries, and capillaries—covers the essential components that work together to move blood and sustain circulation. The other options point to different body systems (musculoskeletal, digestive, and respiratory), which interact with the cardiovascular system but are not what defines it.