The contraction phase of the heart is called…- the cardiac cycle.- diastole.- atrial contraction.- systole.
systole
The correct answer is systole.
Systole is the phase of the cardiac cycle when the heart muscle contracts and pumps blood out of the chambers into the arteries. During systole, the ventricles contract and push blood into the aorta and pulmonary arteries, while the atria are relaxed and filling with blood.
Diastole, on the other hand, is the phase of the cardiac cycle when the heart muscle relaxes and fills with blood. During diastole, the ventricles are filling with blood from the atria, while the atria are contracting to push blood into the ventricles.
Atrial contraction is a component of the cardiac cycle, but it occurs during diastole when the atria are contracting to push blood into the ventricles.
So, the correct answer is systole which is the contraction phase of the heart and pumps blood out of the chambers.
More Answers:
Understanding the Respiratory System: Functions and Importance of the Nasal and Oral CavitiesPulmonary System: Understanding the Four Vital Processes of Gas Exchange and Respiratory Regulation
Discover How Your Pulmonary System Works: Supplying Oxygen and Eliminating Waste Gases