The Appeal to Nature (also, Biologizing; The Green Fallacy): The contemporary romantic fallacy of ethos (that of Mother Nature) that if something is natural it has to be good, healthy and beneficial. E.g., Our premium herb tea is lovingly brewed from the finest freshly-picked natural T. Radicans leaves.
Found only in the heart, cardiac muscle is responsible for pumping blood throughout the body. Cardiac muscle tissue cannot be controlled consciously, so it is an involuntary muscle. While hormones and signals from the brain adjust the rate of contraction, cardiac muscle stimulates itself to contract.
1 These impulses cause the heart to contract and then relax, producing what is known as a heart beat. 2  The beating of the heart drives the cardiac cycle which pumps blood to cells and tissues of the body. 3  Blood Vessels. 4  Blood vessels are intricate networks of hollow tubes that transport blood throughout the entire body.