<span>The best answer is :
Systolic circulation
</span>The systolic blood circulation is the process when the heart contracts., the oxygen-rich blood from the heart is pumped out into the arteries, from where it is sent to all the body parts.
<span>The node which initiates the contraction through a nerve signal is called the AV node.</span>
Kilocalorie
This is the measurement for chemical energy
It causes your heart rate to go up, and for you to sweat
I sleep in the second position or the third position I usually move a lot
The answer is false
The leading cause of death is car crashes
