The circulatory system is system in the human body that provides a network through which our blood flows constantly.The human cardiovascular system is considered closed because there are no holes for blood to enter or leave the system. Correct answer: D
In the closed circulatory system the blood stays confined within the vessels and heart.
They both help with body odor, they also help with like ladies when you wearing shorts rub or spray between the legs where the short rub. and they wont rub anymore.
