What function would be altered if an individual's astroglial cells in the nervous system were impaired?
A. Disruption of impulse transmission
B. Formation of the blood-brain barrier
C. Nutrition and support of neurons
D. Production of myelin sheath
C
Astroglial cells are responsible for the physical support and nourishment of the neurons.
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Central cyanosis is associated with
a. visible cyanosis but normal arterial oxygen saturation. b. desaturation of arterial blood. c. reduced hemoglobin of 15 g/dL. d. permanent cerebral hypoxia.
The nurse is planning care for a patient undergoing diagnostic evaluation for presence of an intracranial bleed. Which nursing diagnosis (NDX) would the nurse set as the first priority?
1. Impaired Verbal Communication 2. Potential for Aspiration 3. Risk for Altered Cerebral Tissue Perfusion 4. Altered Coping
The nurse at a community center is preparing a program for elderly people at risk for malnutrition who need community resources. Which is the best action for initiating the nurse's program?
a. Review each individual's height, weight, and health history. b. Teach low-cost menus and methods for a balanced diet. c. Post flyers with instructions for obtaining free vitamins. d. Provide telephone numbers of food banks and free meals.
Obesity acts as an important risk factor for type 2 diabetes mellitus by
a. Reducing the amount of insulin, the pancreas produces b. Increasing the resistance to insulin by cells c. Obstructing the outflow of insulin from the pancreas d. Stimulating the liver to increase glucose production