Which of the following cells, common to the epidermis, result in a patient having a darker hair or skin color?
A) Keratin cells
B) Melanocytes
C) Merkel cells
D) Stratum cells
Ans: B
Feedback: Melanocytes are primarily involved in producing the pigment melanin. Dead cells of the epidermis contain keratin, an insoluble, fibrous protein that forms the outer barrier of the skin. Merkel cells are the receptors that transmit stimuli to the axon through a chemical synapse. Langerhans' cells are believed to play a significant role in cutaneous immune system reactions.
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A 55-year-old man's hypertension has not responded adequately to his current medication regimen consisting or an ACE inhibitor, a beta-blocker and a thiazide diuretic
As a result, he will soon begin taking hydralazine (Apresoline) in addition to his existing antihypertensives. The addition of this medication to his regimen means that the nurse must prioritize which of the following nursing actions? A) Close monitoring of the patient's electrolyte levels B) Supervision of the patient when performing activities of daily living C) Frequent assessment of the patient's cardiac status D) Checking the patient's blood glucose levels before each meal and at bedtime
A nurse in a medical unit has noted that a client's potassium level is elevated at 6.1 mEq/L. The nurse has notified the physician, removed the banana from the client's lunch tray, and is performing a focused assessment
When questioned by the client for the rationale for these actions, which of the following explanations is most appropriate? A) "Your potassium level is high, and so I need you let me know if you feel numbness, tingling, or weakness." B) "Your potassium levels in the blood are higher than they should be, which brings a risk of changes in the brain function." C) "I'll need to monitor you today for signs of high potassium; tell me if you feel as if your heart is beating quickly or irregularly." D) "The amount of potassium in your blood is too high, but this can be resolved by changing the intravenous fluid you are receiving."
Which client statement would lead the nurse to suspect that the developmental task of infancy was
not successfully completed by the client? a. "Andy and I are very warm and close friends.". b. "I'm afraid to allow anyone to really get to know me.". c. "I'm always absolutely right, so don't bother saying more.". d. "I'm so ashamed because I didn't do it correctly in the first place.".
Which of the following releases medication into an area rich in blood vessels?
A. enteric-coated tablets B. spansules C. sublingual tablets D. gelcaps