Trivia: Which system circulates blood around the body?
Cardiovascular system
Endocrine system
Nervous system
Reproductive system
Correct Answer: Cardiovascular system
So why is this answer correct? : The cardiovascular system’s heart, arteries, veins, and capillaries work together to pump and circulate blood through the body. Since blood carries oxygen, nutrients, and waste to the appropriate organs and tissues, proper circulation is vital to bodily functions.