Indicate the drug - Vinca minor alcaloid:

Correct Answer: D

Rationale: The correct answer is D: Vinpocetine. Vinca minor alkaloids are derived from the plant Vinca minor. Vinpocetine is a synthetic derivative of Vinca minor alkaloids used for its cerebral vasodilator properties. Nicergoline (A) is a different class of drug used for cognitive enhancement. Warfarin (B) is an anticoagulant. Cinnarizine (C) is a calcium channel blocker used for vertigo and motion sickness. Vinpocetine (D) is the correct answer due to its relation to Vinca minor alkaloids and its use as a cerebral vasodilator.

Correct Answer: D

Rationale: The correct answer is D because physiologic doses of glucocorticoids can indeed result in all of the mentioned effects. A: Glucocorticoids can increase liver glycogen stores, gluconeogenesis, and lipolysis. B: Glucocorticoids help maintain cardiovascular function by potentiating norepinephrine and improve skeletal muscle function. C: Glucocorticoids can enhance hemoglobin synthesis, leading to an increase in red blood cell count. Therefore, all three choices are valid effects of physiologic doses of glucocorticoids, making option D the correct answer.

Correct Answer: D

Rationale: The correct answer is D, Phenothiazines such as Promethazine, because they have the highest local anesthetic effect among histamine H1 antagonists. This is due to their structural properties that allow them to interact with sodium channels and block nerve impulses effectively. Phenothiazines have a bulky side chain that enhances their local anesthetic properties. A, Alkylamines like Brompheniramine, are known for their sedative effects rather than local anesthetic properties. B, Piperidines including Loratadine and Fexofenadine, are mainly used for their antihistaminic effects and do not exhibit strong local anesthetic properties. C, Ethylenediamines like Suprastine, are not recognized for their local anesthetic effects but rather for their antihistaminic actions. In summary, Phenothiazines stand out as having the highest local anesthetic effect compared to the other categories of histamine H

Correct Answer: D

Rationale: The correct answer is D (All of the above) because riboflavin deficiency can manifest as all the symptoms mentioned in choices A, B, and C. Riboflavin is essential for maintaining healthy skin and mucous membranes, so deficiency can lead to cheilitis (choice A) and cheilosis (choice B), which both involve inflammation and fissures in the lips. Additionally, riboflavin deficiency can cause angular stomatitis (choice C), which is characterized by inflammation and fissures at the corners of the mouth. Therefore, all the symptoms listed in choices A, B, and C are potential deficiency symptoms of riboflavin. Choices A, B, and C are incorrect individually because they only describe specific symptoms of riboflavin deficiency, whereas the correct answer D encompasses all the possible symptoms.

Correct Answer: D

Rationale: The correct answer is D because chylomicron is a large lipoprotein particle produced in the small intestine absorbing dietary fats. This lipoprotein transports lipids to adipose tissue where they are broken down by lipoprotein lipase. The other choices are incorrect because: A: Chylomicron does not contain small amounts of cholesterol and triglycerides, nor is it associated with decreased risk of atherosclerosis. B: Chylomicron carries dietary lipids, not cholesterol from the liver to tissues. C: Chylomicron does not contain high amounts of cholesterol and is not associated with increased risk of atherosclerosis.