The normal pacemaker of the heart is the _____ node, which is found in the _____ atrium, and has an intrinsic firing rate of _____ beats/min
a. sinoatrial; left; 40 to 60
b. sinoatrial; right; 60 to 100
c. atrioventricular; left; 20 to 40
d. atrioventricular; right; 100 to 180
B
The sinoatrial (SA) node is normally the primary pacemaker of the heart because it has the fastest firing rate of all of the heart's normal pacemaker sites (60 to 100 beats/min). The SA node is located in the upper posterior part of the right atrium where the superior vena cava and the right atrium meet.
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Which of the following factors results in rural residents having less access to health care than urban dwellers? (Select all that apply.)
a. Employment opportunities may be low paying and seasonal. b. There are greater distances to travel and limited choice of health care providers. c. Health care providers prefer to work in higher-paying urban settings. d. Rural residents are less likely to have health insurance. e. Rural persons' economic resources are tied up in land, not easily accessible cash. f. Rural persons believe in self-sufficiency and self-care, not asking others for help.
In which of the following situations would blood most likely rapidly relocate from central circulation to the lower extremities?
A) A client undergoes a stress test on a treadmill. B) A client does isotonic exercises in a wheelchair. C) A client is helped out of bed and stands up. D) A client reclines from a sitting to supine position.
The nurse instructs a client that diarrhea can be caused by the inclusion in the diet of such foods as:
1. cheese. 2. cabbage. 3. rice. 4. yogurt.
Which of the following nursing home facilities offers the residents a range of services from independent living to skilled nursing care?
A. Skilled nursing facilities B. Chronic care facilities C. Residential facilities D. Nursing facilities