AS Cardiac cycle and control of the heart beat

Identify the stage of the cardiac cycle seen in the image

• Atrial diastole

• Ventricular systole

• Atrial systole

• Ventricular diastole

Where in the heart is the sinoatrial located?

• The wall of the left atrium

• The septum

• The wall of the right ventricle

• The wall of the right atrium

State the term for the tissue that conducts the excitation wave down the through the septum and outwards and upwards through the ventricle walls

Where in the heart is the atriventricular node located?

• The septum

• Base of the pulmonary artery

• Wall of left ventricle

• Wall of right ventricle

What term describes the cardiac muscle because it will contract without nervous stimulation?

Identify the stage of the cardiac cycle in the image

• Atrial systole

• Ventricular systole

• Ventricular diastole

• Atrial diastole

What causes the bicuspid valve to close during ventricular systole?

• A greater blood pressure in the left atrium than the left ventricle

• A greater blood pressure in the left ventricle than the left atrium

• Contraction of muscles in the septum

• Contraction of muscles in the valve

Aortic pressure increases at which point?

• During atrial systole

• During ventricular diastole

• During ventricular systole

• It always remains constant