Question

1)definition of systol&diastole.
2) what is sternum&diaphragm​

Answer 1

1) a) definition of systol :

    The systole is the part of the cardiac cycle during which some chambers      of the heart muscle contract after refilling with blood.

 b) definition of diastole:

the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.

2) A) What is sternum?

           Your sternum is a bone that's located in the middle of your chest. It's also sometimes referred to as the breastbone.

B) What is diaphragam?

               The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily.

Answer 2

Answer:

here is your answer

please mark me as brainlist