Cardiovascular System
What is the function of the cardiovascular system?
This system has many functions including, Transport of nutrients, oxygen, and hormones to cells and removal of wastes products like (carbon dioxide nand nitrogenous wastes).
Clotting mechanisms are also present that protect the body from lost of blood loss after injuries.
Describe what happens to heart rate before and during exercise?
Your heart rate speeds up during exersise to pump extra oxygen to the muscles and remove carbon dioide . Breathing also speeds up for the same reason, to get more oxygen and to get rid of more carbon dioxide. the fitter the person is the tougher the activey has to be to increase the rate.