Final answer:
The cardiovascular system includes the heart, arteries, veins, and capillaries and is responsible for transporting blood throughout the body.
Step-by-step explanation:
The subject of this question is the Cardiovascular system. The cardiovascular system includes the heart, arteries, veins, and capillaries. Its main function is to transport blood throughout the body, delivering nutrients, hormones, gases, and waste products to and from cells.