Which layer of cardiac tissue contains the cells that contract to produce the heartbeat?

myocardium

Cardiac muscle tissue, or myocardium, contains cells that expand and contract in response to electrical impulses from the nervous system. These cardiac cells work together to produce the rhythmic, wave-like contractions that is the heartbea

anikam

Explanation:

the join tissue in your hearbeat

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%