Blood leaving the left ventricle passes through which of the following structures?

Correct Answer: D

Rationale: Blood leaving the left ventricle flows into the aorta via the aortic semilunar valve. This valve prevents backflow of blood from the aorta into the left ventricle.

Correct Answer: B

Rationale: The pulmonary artery carries deoxygenated blood from the heart to the lungs for oxygenation.

Correct Answer: C

Rationale: Capillaries consist only of tunica intima (endothelium), lacking media and externa.

Correct Answer: B

Rationale: Auricles are specific structures that extend from the atria but are not synonymous with them.

Correct Answer: C

Rationale: Cardiac output is calculated as the product of stroke volume and heart rate.