All of the following are common adverse effects of calcium channel blockers EXCEPT:

Correct Answer: A

Rationale: The correct answer is A: Skeletal muscle weakness. Calcium channel blockers primarily affect smooth muscle in blood vessels and the heart, not skeletal muscles. Dizziness, headache, and flushing are common adverse effects due to vasodilation and reduced cardiac output. Therefore, the correct answer is A because skeletal muscle weakness is not a typical adverse effect of calcium channel blockers.

Correct Answer: D

Rationale: The correct answer is D because all three dopamine agonists, Bromocriptine, Cabergoline, and Pergolide, are known to decrease pituitary prolactin secretion. Dopamine inhibits prolactin release from the pituitary gland, and these agonists mimic dopamine's action. Therefore, all three choices are correct. Summary: A: Bromocriptine - Decreases pituitary prolactin secretion. B: Cabergoline - Decreases pituitary prolactin secretion. C: Pergolide - Decreases pituitary prolactin secretion. All choices are correct as they are dopamine agonists that decrease pituitary prolactin secretion.

Correct Answer: D

Rationale: Step 1: Estrogens are required for normal sexual maturation and growth of the female. This is true as estrogens play a key role in the development of secondary sexual characteristics and growth. Step 2: Estrogens decrease the rate of resorption of bone. This is true as estrogens help maintain bone density by inhibiting bone breakdown. Step 3: Estrogens enhance the coagulability of blood. This is true as estrogens can increase clotting factors leading to enhanced blood coagulability. Step 4: Combining the above points, it is evident that all the statements are true, making choice D the correct answer. Other choices are incorrect as they do not align with the established functions of estrogens.

Correct Answer: D

Rationale: The correct answer is D because aspirin can cause gastric upset, salicylism symptoms like vomiting, tinnitus, decreased hearing, and vertigo, as well as gastric ulcers and upper gastrointestinal bleeding. Aspirin is known to irritate the stomach lining, leading to gastric upset and ulcers. Salicylism symptoms are characteristic of aspirin toxicity. Gastrointestinal bleeding is a serious side effect of aspirin due to its effect on blood clotting. Choices A, B, and C individually describe common side effects of aspirin, but only choice D encompasses all the side effects associated with aspirin use.

Correct Answer: B

Rationale: The class of OKT-3 is monoclonal antibodies. OKT-3 is a specific monoclonal antibody used for immunosuppression in organ transplant recipients. Monoclonal antibodies are designed to target specific antigens or proteins in the body. Other choices are incorrect as interferons are cytokines, immunoglobulins are antibodies produced by plasma cells, and immunosuppressive agents are a broad category that includes various drugs targeting the immune system.