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Where are the cells that initiate the stimulus for contraction of the heart muscle located?
SA node
What cells carry electricity around he body?
The heart but in the heart the cell that carys electricity around yourr boady is called the Pacemaker and the brain also uses electricity to send messages around your body
How does a heart cell knows it's a heart cell?
Cells produce an enormous amount of molecules of which some (many) act as messengers and activators or inhibitors. When heart cells receive stimulation from other heart cells with certain molecules, they "know" what they are and that they should keep on being heart cells.
Where are the cells that make up the pacemaker?
Those cells are nerve cells, the brain sends electrical pulses down and the electricity causes the heart to beat.
What Cells that set the pace for the beating of the heart as a whole are also called?
Pacemaker cells, also known as the sinoatrial (SA) node, are specialized cells in the heart that generate electrical impulses to regulate its rhythm. These cells initiate each heartbeat and set the pace for the entire heart.
What controls the rate and rhythm of the heart beat?
A region in the upper left hand corner of the heart is considered the pacemaker. Those cells exhibit autorhythmicity. That means these cells have the ability to initiate their won action potential and the heart can beat on its own. The endocrine and autonomic nervous system can influence the rate but the heart controls its own beat.
How are the heart impulses detected?
The Pacemaker cells of the Sinoatrial Node spontaneously initiates the impulse. Without stimulation from nerve fibers or any other outside agents, the nodal cells initiate impulses that spread into the surrounding myocardium and stimulate cardiac muscle fibers to contract.
Name the instrument placed in heart patients to initiate heart beat?
An artificial pacemaker
What has the author Maura written?
Maura has written: 'Initiate the heart'
Can a heart come back to life?
Not if the cells are dead, but (for about an hour) if the heart is only stopped then it can be restarted. Certainly. In heart transplant operations, the donor heart is effectively "dead" at the moment of transplantation into the recipient. It has to be re-animated with a jolt of electricity.
How is the heart controlled by electricity?
The heart is controlled by electrical signals generated by a specialized group of cells called the sinoatrial node. These electrical signals regulate the heart's rhythm and coordinate the contraction of its muscle cells, allowing the heart to pump blood efficiently throughout the body. Any disruptions in this electrical system can lead to heart rhythm abnormalities, such as arrhythmias.
What is ishemia?
Ischamia is the lack of oxygen to a certain part of the body. For example in a heart attack, the heart muscle undergoes ischaemia because blood can't reach the heart muscle cells.
