What part of the cardiovascular system is directly responsible for nutrient transport? a. the heart b. the arteries c. the veins d. the blood

C. the veins

Explanation:

The cardiovascular system or human circulatory system is responsible for the circulation of blood in order to carry nutrients and oxygen throughout the body. The Cardiovascular System is formed by the blood vessels (arteries, veins and capillaries) and the heart.

Veins are vessels of the cardiovascular system that carry blood from various parts of the body back to the heart. Its wall is thinner than that of the arteries and therefore the transport of blood is slower. Nutrients are carried to all parts of the body through the blood and as it is the veins that carry the blood to all parts of the body, we can say that the veins are the part of the cardiovascular system that is directly responsible for the transport of nutrients.

answer; indirect elisa;

b) the heart is a pump made of muscle and that is difficult to grow in the lab.