The nurse is caring for a patient who works as a legal secretary. The patient asks the nurse about ways to avoid developing carpal tunnel syndrome (CTS). Which action should the nurse suggest?

Correct Answer: C

Rationale: The correct answer is C: "Acquire a pad to support your wrists while typing." This is the best option as wrist supports can help maintain neutral wrist positioning, reducing strain on the median nerve and decreasing the risk of developing CTS. A: "Exercise your wrists with repetitive flexion movements nightly." - This can actually worsen the symptoms of CTS by putting more strain on the wrists. B: "Wrap your wrists with elastic bandages." - Elastic bandages do not provide the necessary support and may restrict blood flow. D: "Apply warm compresses to wrists every evening." - While warm compresses can provide temporary relief for symptoms, they do not address the underlying cause of CTS.

Correct Answer: D

Rationale: Effector T cells are fully activated, expanded, and capable of carrying out their functions, such as killing infected cells or assisting in immune responses. The correct choice (D) accurately describes the characteristics of effector T cells. They are not naïve cells (A), as they have encountered their specific antigen. They are not just starting to proliferate (B), as they have already undergone extensive proliferation. They have not only been energized (C), but have also completed the necessary steps for full activation and functionality.

Correct Answer: A

Rationale: The dark zone of germinal centers is composed of rapidly proliferating B cells. This is because during the dark zone phase of the germinal center reaction, B cells undergo rapid proliferation and somatic hypermutation to generate high-affinity antibodies. T cells and dendritic cells are typically found in the light zone of the germinal centers where B cells interact with them to receive signals for selection. Rapidly proliferating T cells are not typically found in the dark zone. Follicular dendritic cells are present in the light zone where they present antigens to B cells but not in the dark zone where B cell proliferation mainly occurs.

Correct Answer: B

Rationale: Step 1: The current Influenza vaccine is designed to provide protection against multiple strains to increase effectiveness. Step 2: Option B includes a combination of different strains (H1N1, H5N1, and B), covering a broader spectrum of the virus. Step 3: Including different strains helps to address potential mutations and variations in circulating viruses. Step 4: Option B is the most comprehensive choice compared to others, offering a more robust protection against various strains. Summary: Option A is too limited with only 3 type A strains, while option C focuses only on 2009 H1N1 strain. Option D is also limited to only the most common seasonal H1N1 strain. Option B stands out as the correct choice for its broad coverage of different strains.

Correct Answer: C

Rationale: The correct answer is C: A strain of E. coli. "Hamburger disease" is commonly caused by E. coli O157:H7, a strain of Escherichia coli bacteria found in undercooked ground beef. This strain can lead to severe foodborne illness. Helicobacter pylori (Choice A) is associated with stomach ulcers, not hamburger disease. Salmonella typhimurium (Choice B) and Shigella flexneri (Choice D) are both known to cause food poisoning, but they are not typically linked to hamburger disease specifically. In this case, the unique association between E. coli O157:H7 and undercooked ground beef makes Choice C the correct answer.