Why don't you have to make your heart beat?

because ur brain subconsciously signals your heart to do it in order to stay alive

Explanation:

Some muscles in the body are “involuntary”, which means you can't control them. The heart is made of a special involuntary muscle called cardiac muscle, and this muscle is made up of cells called cardiomyocytes (which literally means “heart muscle cells” in Latin)

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank