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Contraction of the ventricles and atria is called systole. Relaxation is called diastole.
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∙ 13y ago
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What does the term systole mean?
Systole is the period of heart contraction within the cardiac cycle.
Is the 2nd heart sound in the period of isometric contraction?
no. it occurs at the beginning of isovolumetric relaxation.
When is the Blood pressure greatest in the arteries?
Blood pressure in the arteries is greatest during systole. Systole is the period of heart contraction, while diastole is the period of heart relaxation.
What effect do calcium slow channels have on shortening or lengthinging the contraction time of the heart muscle?
They cause long refractory period
The contraction of the ventricles is referred to as systole and the period of ventricular relaxation is called?
I believe that is called diastole, in contrast to systole, the contraction of the heart muscles.
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 short amount of time between the time of stimulation and the beginning of contraction in a skeletal muscle?
latent period
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 causes rhythmic beating of the heart?
When blood and air is tranferred into the heart, the heart has to start beating unless we are dead.The rhythmic beating of the heart is maintained by the Sinoatrial node (80-100 beats/minute), the Atrioventricular node (40-60 beats/minute) or the Purkinje fibers (20-40 beats/minute). It involves the membrane potential of specialized myocardial cells in these parts. Once regions of the heart are fully depolarized (such as the ventricles), contraction follows. Immediately following depolarization comes repolarization, and thus the cycle can repeat itself.How_is_the_rhythmic_beating_of_the_heart_maintained
