During which part of the cardiac cycle is pressure in the ventricle at its lowest?

Correct Answer: A

Rationale: Pressure in the ventricles is lowest during mid-diastole when the chambers are relaxed and filling passively.

Correct Answer: D

Rationale: Byssinosis, caused by cotton dust exposure, is a hypersensitivity pneumonitis seen in textile workers.

Correct Answer: C

Rationale: The human heart has four valves: tricuspid, pulmonary, mitral, and aortic.

Correct Answer: B

Rationale: Levels above this range increase the risk of toxicity.

Correct Answer: B

Rationale: Amiodarone can cause pulmonary toxicity, requiring immediate intervention.