PHSL101 Cardiovascular System

True or false? The right ventricle wall is thicker than the left ventricle wall.

• True

• False

Fill in the blanks: The right side of the heart pumps ____________ blood to the _____________.

• Deoxygenated; body

• Deoxygenated; lungs

• Oxygenated; body

• Oxygenated; lungs

Blood from the lungs returns to the heart via the

• Aorta

• Pulmonary trunk (artery)

• Pulmonary vein

• Vena cava

Which structure is labelled 'G'?

• Left atrium

• Left ventricle

• Right atrium

• Right ventricle

The tricuspid valve sits between which pair of structures?

• A and D

• B and G

• D and E

• F and G

The QRS complex on an ECG represents:

• Atrial depolarisation

• Atrial repolarisation

• Ventricular depolarisation

• Ventricular repolarisation

The two phases of the cardiac cycle are ____________ and systole.

Atrial contraction will be triggered by which part of the ECG?

• P-wave

• QRS complex

• R-R interval

• T-wave

Which of the following describes the valves during isovolumetric contraction?

• AV valves closed, semilunar valves open

• AV valves closed, semilunar valves closed

• AV valves open, semilunar valves open

• AV valves open, semilunar valves closed

The semilunar valves are open when:

• Atrial pressure is higher than in the ventricles

• Atrial pressure is higher than in the veins

• Arterial pressure is higher than in the ventricles

• Ventricular pressure is higher than in the arteries