It is called asystole
50 feet
strobilae
Adrenaline
Someone would be called clinically dead when their heart stops beating.
This phrase "your heart is beating like a drum," is called a simile. It means your heart is beating very fast, excitedly. Something has excited you very much. Often used romantically.
creaming
beazver feet
..feet?
No, flat feet is not called pronated feet. Pronation is the inward roll of the foot when walking or running. Pronation is also sometimes called eversion.
Webbed feet
Electric shocks can be given in certain types of heart-attacks. When the heart has trouble beating it gets what is called fibrillation. The electric device that stops that is called a defibrillator because it shocks the heart into beating normally.