How is the regulation of cardiac activity per | vedclass

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(B) The regulation of cardiac activity is under the control of neural and endocrine mechanisms.Normal activities of the heart are regulated intrinsica

Vedclass · Accepted Answer

By the autonomic nervous system and adrenal medullary hormones.

Vedclass · Answer

(B) The regulation of cardiac activity is under the control of neural and endocrine mechanisms.Normal activities of the heart are regulated intrinsically,i.e.,auto-regulated by specialized muscles known as nodal tissue.Because nodal tissue possesses qualities of both muscle and nerves,the heart is called myogenic.$A$ special neural center in the medulla oblongata can moderate cardiac function through the autonomic nervous system $(ANS)$.Neural signals through the sympathetic nerves (part of $ANS$) can increase the rate of heartbeat,the strength of ventricular contraction,and thereby the cardiac output.On the other hand,parasympathetic neural signals decrease the rate of heartbeat,the speed of conduction of action potentials,and thereby the cardiac output.Adrenal medullary hormones (such as epinephrine and norepinephrine) can also increase cardiac output.

How is the regulation of cardiac activity performed?

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Select the correct option regarding the regulation of cardiac activity.

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