Lipoproteins transport lipids through the blood for utilization by tissues, storage in adipose tissue, or excretion by the

A. Multiple sclerosis is a chronic autoimmune disease affecting the central nervous system, not caused by statins or involving muscle inflammation.

B. Rhabdomyolysis is the breakdown of muscle tissue that leads to the release of muscle fiber contents into the bloodstream. It can be caused by statin medications among other factors.

C. Dystonia is a movement disorder characterized by involuntary muscle contractions, unrelated to muscle breakdown.

D. Spasticity is a condition where certain muscles are continuously contracted, causing stiffness or tightness of the muscles, also unrelated to muscle breakdown.

A. Organic nitrates, such as nitroglycerin, dilate (widen) veins and coronary arteries, leading to decreased preload and afterload, which helps relieve angina pain.

B. Constricting veins and coronary arteries would exacerbate angina symptoms by reducing blood flow to the heart muscle.

C. Dissolving veins and coronary arteries is not a mechanism of action for organic nitrates in the treatment of angina.

D. Dilating veins and coronary arteries is the primary mechanism of action for organic nitrates, resulting in increased blood flow to the heart muscle and relief of angina pain.