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Systole is when a chamber of the heart (i.e. atrial vs. ventricular systole) is contracting. Diastole is when a chamber of the heart is relaxing. Without qualifying which chamber it is usually assumed to mean the left ventricle.
Systole refers to when the heart is contracted and diastole refers to when the heart is relaxed.
What else can I help you with?
Do coronary arteries get their blood supply during systole or diastole?
Coronary arteries primarily receive blood supply during diastole when the heart is relaxed and filling with blood. This is because during systole, when the heart is contracting to push blood out, the coronary arteries can get compressed which reduces blood flow to the heart muscle.
What is systole and diastole?
Systole and diastole describe the phase/state the heart is in during a heartbeat. Systole refers to the heart when contracted, and blood is pumped into the arteries. Diastole refers to the heart when it is relaxed and blood enters the upper chambers.
The terms systole and diastole refer respectively to the?
Systole refers to the phase of the heartbeat when the heart muscle contracts and blood is pushed out of the heart chambers. Diastole refers to the phase when the heart muscle relaxes and the heart chambers fill with blood.
The alternating expansion and contraction of artery walls caused by the contraction and relaxation of the ventricles?
This process is known as the pulse and is the result of the heart pumping blood into the arteries. As the heart contracts (systole), blood is pushed into the arteries causing them to expand. When the heart relaxes (diastole), the arteries recoil back to their original shape, creating a pulse that can be felt in different parts of the body.
What is the relaxing phase of the cardiac cycle?
The relaxing phase of the cardiac cycle is called diastole. During diastole, the heart chambers (atria and ventricles) relax, allowing them to fill with blood. This is followed by the contracting phase called systole.
What are the two qualities of the heart beat which must be observed?
diastole and systole diastole and systole
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.
Which heart chamber do the terms systole and diastole most ofter apply?
Systole and diastole most often refer to the ventricle of the heart. Systole is contraction of the ventricle, and diastole is the relaxation of the ventricle.
Why can you only feel one pulse and the doctors can hear two?
When a doctor listens to your heart he hears the systole and diastole of the heart. The "lub-dub" that they hear is the closure of valves of the heart at rest (diastole) when the heart fills with blood and the heart squeezes blood (systole) out into the body. When you feel the pulse, you only feel when the heart pushes blood through the vascular system during systole.
What is systole and diastole and how this relates to the two figures obtained when blood pressure is taken?
I think systole is when the heart contracts- the "lub" of the heart- and diastole is when the heart relaxes- the "dub" of the heart. Systole is the numerator of the fraction and diastole is the denominator of the fraction. Ex. 120/80 120 is systole and 80 is diastole
What are the phases of the cardiac cycle?
Mid-to-late diastole, ventricular systole and early diastole
To which heart chambers do the terms systole and diastole usually apply?
The terms systole and diastole most often apply to the Right and Left Ventricles
Systole and diastole describe the function of the?
Myocardium
Period of heart contraction?
Contraction of the ventricles and atria is called systole. Relaxation is called diastole.
What is meant by systole and diastole?
The ventricles of heart have two states: systole(contraction) and diastole (relaxation). During diastole blood fills the ventricles and during systole the blood is pushed out of the heart into the arteries. The auricles contract anti-phase to the ventricles and chiefly serve to optimally fill the ventricles with blood.http://www.answers.com/systole
What are the two main phases of a heartbeat?
There is the contraction of the atria and the contraction of the ventricles. When the atria contract, the AV valves are open, allowing the blood to fall into the ventricles. The AV valves then close, and the ventricles contract, pumping the blood out into the arteries.
What is s1s2?
S1 S2 are heart sounds. The S1 sound occurs at the beginning of systole (end of diastole). The S2 sound occurs at the beginning of Diastole (end of systole).
