Cardiopulmonary system

What is the correct path through the circulatory system which describes the passage of blood originating in the left leg?

• Left leg -> vena cava -> left atrium -> tricuspid valve -> left ventricle -> pulmonary valve -> pulmonary artery -> lungs

• Left leg -> aorta -> right atrium -> tricuspid valve -> right ventricle -> pulmonary valve -> pulmonary artery -> lungs

• Left leg -> vena cava -> left atrium -> tricuspid valve -> right ventricle -> pulmonary valve -> pulmonary artery -> lungs

• Left leg -> vena cava -> right atrium -> tricuspid valve -> right ventricle -> pulmonary valve -> pulmonary artery -> lungs

• Left leg -> aorta -> left atrium -> tricuspid valve -> left ventricle -> pulmonary valve -> pulmonary artery -> lungs

Which heart valve do you expect to be open during ventricular contraction.

• Tricuspid valve

• Aortic valve

• Mitral valve

• All valve will be open

What vessels carry deoxygenated blood away from the heart?

• Aorta

• Vena cava

• Pulmonary artery

• All arteries

• All veins

Where does blood entering the right atrium come from?

• Pulmonary artery

• Aorta

• Pulmonary vein

• Superior and inferior vena cava

Strokes can be caused by a blood clot blocking blood flow to the brain. Where is a stroke-causing blood clot most likely to form?

• The R atrium

• The R ventricle

• The L atrium

• The venous system

• Heart attacks and strokes are not caused by blood clots.

Which of the following initiates the heart beat?

• Ventricles

• L atria

• Sinoatrial node

• Bundle of His

• R atria

Which chambers of the heart pump oxygenated blood?

• The right and left atria

• The right and left ventricles

• The right atria and the left ventricle

• The left atria and the left ventricle

Gas exchange between the blood and tissues occurs:

• Throughout the circulatory system

• In the arteries, and capillaries

• In the systemic arteries only

• In the capillaries only

In passing from the right atrium to the right ventricle, blood will have passed through the:

• Mitral valve

• Tricuspid valve

• Aortic valve

• Pulmonary valve

Which chambers of the heart pump oxygenated blood?

• The left atrium and right ventricle

• The left atrium and left ventricle

• The right atrium and left ventricle

• The right atrium and right ventricle