Parasympathetic neural signals decrease all the following except
(A) conduction speed of action potentials
(B) cardiac output
(C) duration of cardiac cycle
(D) rate of heart beat

Decrease in the rate of heart beat, speed of conduction of action potential and thereby the cardiac output is under the control of

The cardiac cycle includes all of the following events EXCEPT

Which of the following structure in the normal human heat generates action potential to initiate a cardiac cycle ?

Heart Rate || Cardiac Output || Pulse And Pulse Rate || Cardiac Cycle

P.Normal activities of the heart are regulated extrinsically i. e auto regulated by specialized muscles. Q. A special neural center in the medulla oblongata can moderate the cardiac function through the autonomic nervous function ( ANS) . R. Parasympathetic mental signals decrease the rate of heartbeat. S. Adrenal medullary hormones increase cardiac output. How many of the given statements are incorrect about the regulation of cardiac activities ?

neural signal through autonommic nervous system (ANS) can a. Increase the heart beat rate b. Decrease the heart beat rate c. Increase the strength of ventricular contraction d. Decrease the speed of conduction of action potential e. Increase cardiac output f. Decrease cardiac output

neural signals through parasympathetic neural signals (another comonent of ANS) can a. Increase the heart beat rate b. Decrease the heart beat rate c. increase the strength of ventricular contraction e. Increase cardiac output f. Decreases cardiac output