The right side of the heart is responsible for:

Correct Answer: B

Rationale: The heart has two sides with distinct roles. The right side receives deoxygenated blood from the body via the superior and inferior vena cava and pumps it to the lungs through the pulmonary arteries for oxygenation. Choice A describes the left side’s role, Choice C is incorrect as the right side doesn’t pump to the body, and Choice D reverses the oxygenation state. Thus, Choice B is correct.

Correct Answer: A

Rationale: Chordae tendineae are fibrous cords that anchor the atrioventricular (AV) valves (tricuspid and mitral), not the semilunar valves (aortic and pulmonary). The other pairings are correct: papillary muscles are in ventricles, trabeculae carneae are in ventricles, and the coronary sinus drains into the right atrium.

Correct Answer: C

Rationale: Capillaries have an estimated total surface area of about 7500 ft² (600-1000 m²) in humans, reflecting their vast network for exchange. Other options are either too small or exaggerated.

Correct Answer: D

Rationale: Net filtration pressure = hydrostatic pressure (36.6 mmHg) - osmotic pressure (28 mmHg) = 8.6 mmHg outward. At the arteriolar end, this positive pressure pushes fluid out into the interstitial space.

Correct Answer: B

Rationale: Pericarditis is inflammation of the pericardium, the membrane surrounding the heart. The myocardium is the muscle layer, the endocardium is the inner lining, and the mediastinum is the thoracic region, not a heart layer. (Source: Document, p. 62, Pericardial membrane)