Cardiovascular so you can pump oxygenated blood through the heart
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.
Answer:
Don't get out of bed really fast.
Lay down after drinking some water.
Then get something to eat.
Explanation:
Answer:
I respect them as long as they don't do anything weird around me
