The correct answer is option 3 - Heart. A pacemaker is a small device that is implanted in the chest or abdomen to help regulate the heartbeat. It is used when the heart`s natural electrical system is not functioning properly, causing irregular heart rhythms or a slow heart rate. The pacemaker sends electrical impulses to the heart to help it beat at a regular and healthy pace.
Option 1 - Kidney: A pacemaker is not associated with the kidneys. The kidneys are responsible for filtering waste from the blood and maintaining fluid balance in the body.
Option 2 - Brain: A pacemaker is not associated with the brain. The brain controls many bodily functions but does not directly regulate the heartbeat.
Option 4 - Lung: A pacemaker is not associated with the lungs. The lungs are responsible for breathing and oxygen exchange, but not the regulation of the heartbeat.
In conclusion, a pacemaker is associated with the heart, not the kidneys, brain, or lungs.