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The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of |
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|
a) |
Atrioventricular bundle |
b) |
Purkinje system |
|
c) |
Sinuatrial node |
d) |
Atrioventricular node |
|
The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of |
|||
|
a) |
Atrioventricular bundle |
b) |
Purkinje system |
|
c) |
Sinuatrial node |
d) |
Atrioventricular node |
(c)
The pacemaker creates the rhythmical impulse normally made by SA (sinu-atrial) node. Hence, it is implanted at the site of SA-node to mimic the action and to regulate the heart beat. SA-node is found in the upper part of the right atrium of the heart. It is a specialized bundle of neurons (nerve cells).