When a nursing assistant is serving meals to residents she must always:

Correct Answer: B

Rationale: The correct answer is B: Identify the resident. This is essential to ensure that the meal is served to the correct person, preventing mix-ups or errors. By verifying the resident's identity, the nursing assistant can also address any specific dietary restrictions or preferences the resident may have. A: Prepare a diet card for each resident - This is not necessary during meal service, as diet cards are typically used for meal planning purposes and not for serving meals directly. C: Prepare the meal for each resident - Nursing assistants are responsible for serving meals, not preparing them. Meal preparation is usually done by kitchen staff or cooks. D: Prepare a diet plan for each resident - Diet plans are typically created by dietitians or healthcare professionals, not nursing assistants responsible for serving meals.

Correct Answer: C

Rationale: The correct answer is C. Keeping the genital area clean to prevent infection is crucial in catheter care as it reduces the risk of introducing bacteria into the urinary tract. Cleaning the area helps maintain hygiene and prevents urinary tract infections. A: Hanging the drainage bag higher than the level of the hips or bladder is incorrect as it can cause backflow of urine. B: Disconnecting the catheter when positioning or transferring the resident is incorrect as it can lead to contamination and increase infection risk. D: Hanging the drainage bag from the bedrail is incorrect as it can cause obstruction in the flow of urine and increase the risk of infection.

Correct Answer: D

Rationale: The correct answer is D - Red or a different color than the surrounding area. In a stage 1 pressure injury, the skin appears red due to localized blood flow changes. This indicates tissue damage without skin breakdown. Choices A, B, and C are incorrect as stage 1 injuries do not involve nonintact skin, deep craters, or deep purple discoloration. Skin remains intact in stage 1 injuries, with no visible breaks or open wounds. Deep craters and deep purple color are indicative of more severe pressure injuries.

Correct Answer: A

Rationale: The correct answer is A: Lung strength decreases. As people age, their lung tissue becomes less elastic, chest wall muscles weaken, and lung function decreases. This results in reduced lung strength and capacity. Choice B is incorrect because aging causes the airways to become less elastic, not more elastic. Choice C is incorrect as aging can lead to a weaker cough reflex due to decreased muscle strength. Choice D is incorrect because with age, lung function decreases, leading to lower oxygen levels in the blood, not an increase.

Correct Answer: C

Rationale: The correct answer is C: Neuron. Neurons are the basic working units of the nervous system as they transmit electrical and chemical signals throughout the body. They are responsible for processing and transmitting information. The brain and spinal cord (choices A and B) are vital components of the nervous system, but neurons are the fundamental building blocks that make up these structures. Receptors (choice D) are specialized structures that detect stimuli and send signals to neurons. However, neurons are the primary cells involved in transmitting nerve impulses, making them the correct choice in this context.