Nokea
_______ is a disease of the myelin sheath.
- A. Leprosy
- B. Alzheimer disease
- C. Multiple sclerosis
- D. Polio
Correct Answer: C
Rationale: Multiple sclerosis (MS) is a disease that affects the myelin sheath, the protective covering of nerve fibers in the central nervous system. In MS, the immune system mistakenly attacks myelin, leading to inflammation, scarring, and impaired nerve signal transmission. Symptoms include muscle weakness, coordination problems, and cognitive difficulties. MS is a chronic condition that can significantly impact a person's quality of life.
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Which layer of the uterus is shed during menstruation?
- A. Perimetrium
- B. Myometrium
- C. Endometrium
- D. Ectometrium
Correct Answer: C
Rationale: The endometrium is the correct answer because it is the inner lining of the uterus that thickens in preparation for pregnancy and is shed during menstruation if fertilization does not occur. This cyclical process is regulated by hormones such as estrogen and progesterone and is essential for reproductive health.
Before feeding a patient four days following a stroke, what should the nurse do first?
- A. Check the patient's gag reflex.
- B. Order a soft diet for the patient.
- C. Raise the head of the bed to a sitting position.
- D. Evaluate the patient's ability to swallow small amounts of crushed ice or ice water.
Correct Answer: A
Rationale: Checking the gag reflex ensures the patient can safely swallow and reduces the risk of aspiration
The nurse teaches the patient with RA that which exercise is one of the most effective methods of aerobic exercise?
- A. Ballet dancing
- B. Casual walking
- C. Aquatic exercises
- D. Low-impact aerobic exercises
Correct Answer: C
Rationale: Aquatic exercises reduce joint stress.
A 72-year-old man tells the nurse that he cannot perform most of the physical activities he could do 5 years ago because of overall joint aches and pains. What can the nurse do to assist the patient to prevent further deconditioning and decrease the risk for developing musculoskeletal problems?
- A. Limit weight-bearing exercise to prevent stress on fragile bones and possible hip fractures
- B. Advise the patient to avoid the use of canes and walkers because they increase dependence on ambulation aids
- C. Advise the patient to increase his activity by more frequently climbing stairs in buildings and other environments with steps
- D. Discuss use of over-the-counter (OTC) medications to decrease inflammation and pain so that exercise can be maintained
Correct Answer: D
Rationale: OTC medications can help reduce pain and inflammation, allowing the patient to maintain an active lifestyle.
What are the two major physical changes in the brain that are characteristic of Alzheimer's disease?
- A. aluminum deposition and edema
- B. amyloid plaques and neurofibrillary tangles
- C. amyloid plaques and hypertrophy
- D. calcification and hypertrophy
Correct Answer: B
Rationale: Alzheimer's disease is characterized by the accumulation of amyloid plaques (abnormal protein deposits) and neurofibrillary tangles (twisted fibers of tau protein) in the brain. These changes disrupt neuronal communication and lead to cognitive decline.