The portion of the nervous system that is most closely associated with the contraction of the cardiac muscle is the autonomic nervous system.
an engine
an engine
autonomic nervous system
The Federal Reserve System is most closely related to banking.
Parallel
smooth muscle.
The Greeks
puritans
These two come under the section called tissues. They are part of two different systems: cardiac and digestive.
The formation of lactic acid in human muscle cells is most closely associated with anaerobic metabolism during intense exercise when oxygen supply is limited. This process helps regenerate ATP to provide energy for muscle contractions, but can lead to lactic acid buildup and muscle fatigue.
The gluteus maximus is not a system. It is a muscle. It is part of the muscular system. It is the most prominent muscle of your buttocks.