First defense against infection

Correct Answer: B

Rationale: The correct answer is B: Intact skin. Intact skin acts as the first defense against infection by forming a physical barrier that prevents pathogens from entering the body. It is composed of multiple layers, including the epidermis and dermis, which provide protection against microbes. Skin also produces antimicrobial substances and has immune cells that can defend against pathogens. A: Skin is not specific enough, as damaged skin may not provide effective protection. C and D are incomplete answers and do not accurately describe the primary role of intact skin in defending against infections.

Correct Answer: C

Rationale: The correct answer is C: Restlessness and muscle rigidity. Benztropine is an anticholinergic medication commonly used to treat extrapyramidal symptoms such as restlessness and muscle rigidity, which can occur as side effects of antipsychotic medications like haloperidol. Tactile hallucinations (choice A) would not be a direct indication for benztropine. Tardive dyskinesia (choice B) is a late side effect of antipsychotic medications and is not an acute symptom requiring benztropine. Reports of hearing disturbing voices (choice D) are indicative of auditory hallucinations, which would not be treated with benztropine.

Correct Answer: B

Rationale: The correct answer is B: Intact skin. Intact skin acts as the first defense against infection by forming a physical barrier that prevents pathogens from entering the body. It is composed of multiple layers, including the epidermis and dermis, which provide protection against microbes. Skin also produces antimicrobial substances and has immune cells that can defend against pathogens. A: Skin is not specific enough, as damaged skin may not provide effective protection. C and D are incomplete answers and do not accurately describe the primary role of intact skin in defending against infections.

Correct Answer: B

Rationale: The correct answer is B: Clear and light sample. This is because sputum should ideally be clear and light in color, indicating a lower presence of mucus and other contaminants. A cloudy, thick sample (choice A) may indicate an infection or presence of pus. Choices C and D are likely left blank as they are irrelevant or incorrect responses. In summary, a clear and light sputum sample is preferred for accurate testing and diagnosis.

Correct Answer: B

Rationale: The correct answer is B: At the right eye. OD stands for "oculus dexter," which is Latin for right eye. In medicine, OD is used to specify which eye to apply medication to. The other choices are incorrect because A refers to the left eye, C is not a standard eye designation in medical terminology, and D is an incomplete option. Always remember to follow medical conventions and terminology for accurate and precise communication.