Systole

The opening of semilunar valves is due to

• increased ventricular pressure

• decrease ventricular pressure

• increased aortic pressure

• increase in artrial volume

During isovolumetric ventricular contraction

• closure of semilunar valves

• closure of AV valves

• rushing of blood into ventricles

• contraction of atrial musculature

In the diagram below, which part of the tracing represents the contraction of the atria?

• P

• T

• R

• S

Categorize the event as either diastole or systole:

Isovolumetric contraction of ventricles

• diastole

• systole

Which of the following define diastole and systole

• systole is the contraction of the heart and diastole is the relaxation of the heart

• diastole is the contraction of the heart and systole is the relaxation of the heart

• diastole and systole are both contractions of the heart

• diastole and systole are both relaxation phases of the heart

What is the contraction phase of a heartbeat?

• diastole

• SA node

• systole

• impulse

Categorize the event as either diastole or systole:

Semilunar valves close making "dup" sound

• diastole

• systole

Categorize the event as either diastole or systole:

Ejection of blood through semilunar valves

• diastole

• systole

Which phase of the cardiac cycle involves the CONTRACTION of the heart chambers?

• Atria

• Diastole

• Systole

• Ventricles

Match the following phases of the Cardiac Cycle

• Ventricular

  Systole

• Relaxation of the Lower Chambers of the Heart

• Atrial

  Systole

• Relaxation of the Upper Chambers of the Heart

• Atrial

  Diastole

• Contraction of the Upper Chambers of the Heart

• Ventricular

  Diastole

• Contraction of the Lower Chambers of the Heart