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S.A node
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∙ 11y ago
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What creates heart rate?
Heart rate is simply the number of times that the heart beats per minute. This is generated by the "pacemaker" of the body which is the signal sent from the brain to the heart's sinoatrial (SA) node. This causes the initiation of contraction of the cardiac muscle which spreads across the heart to contract the atria and ventricles in a rhythmic fashion. The number of times this signal is sent from the brain to the heart gives the heart rate.
Structure that carries the heart electrical impulse into the ventricle?
The atrioventricular (AV) node sends the signal to the AV bundle, where the wave of contraction travels from the atria to the ventricles.
Where does heart contraction begin?
The area in the heart where contraction begins is a question given by ma'am Luvim Bilango. haha..
What is the contraction of the heart chambers in a regular cycle called?
The contraction of the heart chambers in a regular cycle is called systole
What is the scientific name for the contraction of the heart?
A heart beat
What is the meaning of the two sounds of the heart?
relaxation and contraction of the heart
Where does the heart contraction start and how does it travel?
no
What serves as the actual go signal for muscle contraction?
potassium ions
What allows the movement of blood in and out of the heart?
contraction and relaxation of the heart muscles
What allows the movements of the blood in and out of the heart?
contraction and relaxation of the heart muscles
What is a heart contraction?
it is also known as systol
What stimulates ventrciular myocardium?
heart contraction
