Why are the walls of the left ventricle thicker than that of the right ventricle?

• The left ventricle must force blood into all the capillaries of the lungs 
• the left ventricle doesn't skip leg day
• This is false, the walls of the right ventricle are thicker
• Blood from the left ventricle is pumped throught the entire body 

The chamber that receives oxygenated blood from the lungs

• Right Ventricle

• Left Ventricle

• Right Atrium

• Left Atrium

A flap of tissue that prevents blood from flowing backward

• Aorta
• Atrium
• Septum
• Valve

The chamber that pumps deoxygenated blood to the lungs

• Right Ventricle

• Right Atrium

• Left Ventricle

• Left Atrium

The 'Lub' sound of the heart is caused by .....

• Atrioventricular valves closing

• Semilunar valves closing

• Blood flowing through the Pulmonary artery and aorta

• Blood Flowing down into the ventricles

Which of the following is true about the semi-lunar valves in the heart?

• They are between atria and ventricles

• They close when pressure in the arteries is higher than pressure in the atria

• They prevent backflow of blood into the atria

• They open when pressure in the ventricles is higher than pressure in the arteries

During ventricular systole, which of the following occurs?

• Atrioventricular valves close and semilunar valves close

• Atrioventricular valves close and semilunar valves open

• Atrioventricular valves open and semilunar valves are open

• Atrioventricular valves open and semilunar valves close

State the phase of cardiac cycle shown in the diagram.

• Atrial systole, ventricular systole

• Atrial diastole, ventricular systole

• Atrial systole, ventricular diastole

• Atrial diastole, ventricular diastole

State the phase of cardiac cycle shown in the diagram.

• Atrial systole, ventricular systole

• Atrial diastole, ventricular systole

• Atrial systole, ventricular diastole

• Atrial diastole, ventricular diastole

State the phase of cardiac cycle shown in the diagram.

• Atrial systole, ventricular systole

• Atrial diastole, ventricular systole

• Atrial systole, ventricular diastole

• Atrial diastole, ventricular diastole