The human heart is called ‘myogenic’ heart because

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myocardium is the thickest layer in its wall

its normal activities are regulated intrinsically by specialised muscles

it acts as two pumps, one for systemic circulation and the other for pulmonary circulations

the nervous system plays no role in the regulation of its function

answer is B.

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Detailed Solution

The human heart is called myogenic heart because its normal activities are regulated intrinsically by specialised muscles (nodal tissue). The autonomic nervous system can regulate the cardiac function. Sympathetic neural signals can increase the rate of heartbeat, the strength of ventricular contraction and thereby the cardiac output. Parasympathetic neural signals decrease the rate of heartbeat, speed of conduction of action potential and thereby the cardiac output.

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