Adult Health Nursing Test Bank

Correct Answer: D

Rationale: The correct answer is D: Teeth. Teeth are responsible for the initial mechanical breakdown of food during mastication. Step 1: Teeth use their hard surfaces to chew and grind food into smaller pieces. Step 2: This process increases the surface area of the food, making it easier for digestive enzymes to break down. Step 3: The tongue aids in moving the food around the mouth but does not break down the food mechanically. Pharynx is responsible for swallowing, not mastication. Salivary glands produce saliva that helps in the lubrication and digestion of food, but they do not directly participate in the mechanical breakdown of food.

Correct Answer: A

Rationale: The correct answer is A: Identify and count cases. In the initial stages of an outbreak investigation, it is crucial to identify and count cases to understand the scope and magnitude of the outbreak. By counting cases, Nurse Rona and her team can track the spread of the disease, identify common characteristics among those affected, and determine the extent of the outbreak. This step helps in guiding further investigation and control measures. Summary of other choices: B: Define and identify cases - While defining cases is important, it is not the initial step in outbreak investigation. C: Verify diagnosis - Verifying diagnosis is important but comes after identifying and counting cases. D: Prepare for field work - Field work is important in outbreak investigations, but it typically comes after the initial step of identifying and counting cases.

Correct Answer: A

Rationale: The correct answer is A: Myasthenia gravis. In myasthenia gravis, there is a decrease in acetylcholine receptors at the neuromuscular junction, leading to muscle weakness and fatigue. This occurs due to autoimmune destruction of these receptors. ALS (B) affects motor neurons, not acetylcholine receptors. Guillain-Barre syndrome (C) is an autoimmune disorder affecting peripheral nerves, not neuromuscular junctions. Muscular dystrophy (D) is a genetic disorder causing muscle degeneration, not affecting acetylcholine receptors.

Correct Answer: C

Rationale: The correct answer is C because the documentation lacks essential details regarding the contents of the complaints, reasons for refusing the meal, and the nature of the fall. This information is crucial for understanding the patient's condition and providing appropriate care. Choice A is not directly related to the documentation provided. Choice B is about referrals and medications, which are not mentioned in the documentation. Choice D is about eating time and medications for pain, which are also not relevant to the documentation provided. Therefore, the correct answer is C as it addresses the specific missing information in the nurse's notes.

Correct Answer: C

Rationale: The correct answer is C: Durable power of attorney. This legal document allows Mr. M to appoint his daughter as his healthcare proxy, granting her the authority to make medical decisions on his behalf if he becomes incapacitated. A: Expressed contract involves clear terms agreed upon by both parties, not relevant here. B: Implied contract arises from actions rather than explicit agreement, not applicable in this situation. D: A living will outlines an individual's medical treatment preferences, but does not grant decision-making authority to another person.