Stimulation of beta-1 adrenergic receptors would produce all of the following effects, EXCEPT:
A) an increase in heart rate.
B) increased renin secretion.
C) increased cardiac electrical conduction.
D) decreased myocardial contractility.
Answer: D) decreased myocardial contractility.
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Which statement most accurately describes the relationship between the hydrogen ion concentration and carbon dioxide concentration in extracellular fluids?
A. Because carbon dioxide is a gas and hydrogen ions are electrolytes, these two substances have no relationship in extracellular fluids. B. The concentrations of hydrogen ions and carbon dioxide are directly related, with an increase or decrease in one always resulting in a corresponding increase or de-crease in the other. C. Carbon dioxide buffers hydrogen ions; thus, these two concentrations are in-versely related to each other. The higher the carbon dioxide concentration, the fewer hydrogen ions are present in that fluid. D. Hydrogen ions and carbon dioxide ions exist in a balanced relationship as a result of their charges. The positively charged hydrogen ions are attracted to the nega-tively charged carbon dioxide ions, forming an electrically neutral substance.
A researcher using a small sample of an easily distinguishable group of subjects wishes to use extensive quotes in the research report. This researcher risks
a. a loss of study validity. b. breaching confidentiality. c. losing objectivity. d. reduction of benefits to subjects.
The nurse most effectively addresses the protection of a terminally ill, incontinent client's skin from irritation and breakdown by:
1. Using adult diapers and changing them as soon as they become wet or otherwise soiled 2. Assessing the client's bed frequently for wetness and assuring clean, dry linens and clothing 3. Securing an order for an indwelling catheter and keeping the perineal area free of fecal matter 4. Offering the client frequent opportunities to toilet and responding promptly to requests to toilet
As a person ages, less blood to the brain affects memory and the ability to make ________.
Fill in the blank(s) with the appropriate word(s).