What does systole mean?
Definition of systole : a rhythmically recurrent contraction especially : the contraction of the heart by which the blood is forced out of the chambers and into the aorta and pulmonary artery — compare diastole. Other Words from systole Example Sentences Learn More About systole.
How do you use diastole in a sentence?
Diastole sentence example The blood-pressure synchronously falls, and the heart is arrested in diastole . The ” dup ” sound is caused by the closing of the aortic and pulmonary valves at the beginning of ventricular diastole .
What is systole and diastole?
Summary. Diastole and systole are two phases of the cardiac cycle. They occur as the heart beats, pumping blood through a system of blood vessels that carry blood to every part of the body. Systole occurs when the heart contracts to pump blood out, and diastole occurs when the heart relaxes after contraction.
Why is systole called systole?
A systolic murmur is a heart murmur heard during systole, the time the heart contracts, between the normal first and second heart sounds. “Systolic” comes from the Greek systole meaning “a drawing together or a contraction.” The term has been in use since the 16th century to denote the contraction of the heart muscle.
What is atrial systole?
atrial systole contraction of the atria by which blood is forced into the ventricles; it precedes the true or ventricular systole and is indicated by the fourth heart sound. extra systole see extrasystole. ventricular systole contraction of the ventricles, forcing blood into the aorta and pulmonary artery.
Is systole silent in e?
Inflammation of the bladder. The “e” is pronounced separately in : Diastole, syncope, systole.
What is meant by atrial systole?
Atrial systole occurs toward the end of ventricular diastole, completing the filling of the ventricles. In an ECG, atrial systole is associated with atrial depolarization, or the P wave deflection. “Systole” may also refer to the contraction stage of the contractile vacuole in protozoans.
What does systolic reading indicate?
Systolic blood pressure, the top number, measures the force the heart exerts on the walls of the arteries each time it beats. Diastolic blood pressure, the bottom number, measures the force the heart exerts on the walls of the arteries in between beats.
What happens during a systole?
systole, period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle (the sequence of events in a single heart beat). Systole causes the ejection of blood into the aorta and pulmonary trunk.
Is systole a repolarization?
Atrial systole extends until the QRS complex, at which point, the atria relax. The QRS complex represents depolarization of the ventricles and is followed by ventricular contraction. The T wave represents the repolarization of the ventricles and marks the beginning of ventricular relaxation.
