The pigment that gives skin its color is called:
a. vitiligo c. melanin
b. sebum d. nevi
C
The pigment that gives the skin its color is called melanin. The more melanin present, the darker the skin color. Exposure to ultraviolet light (sun) causes an increase in the production of melanin, which darkens (tans) the skin and provides some protection against the harmful effects of sun-tanning.
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The LPN/LVN is assisting with the data collection of a patient recently admitted to the mental health unit. During the interview, the patient makes a statement that concerns the nurse
Which of the following statements would be most likely to prompt immediate attention? A. "When I get out of here I am going to overdose on my mother's medication." B. "When I get discharged, I am thinking I might try suicide again." C. "I don't feel any better since I got here." D. "If I get the chance, I just might run away."
Impaired balance and uncontrolled tremors of Parkinson's disease is correlated with which neurotransmitter?
A) Glutamate B) Acetylcholine C) Dopamine D) Serotonin
Jim presents with complaints of "heartburn" that is minimally relieved with Tums (calcium carbonate) and is diagnosed with gastroesophageal reflux disease (GERD). An appropriate first-step therapy would be:
1. Omeprazole (Prilosec) twice a day 2. Ranitidine (Zantac) twice a day 3. Famotidine (Pepcid) once a day 4. Metoclopramide (Reglan) four times a day
Physiologic jaundice in a newborn can be caused by:
a. fetal-maternal blood incompatibility. b. destruction of red blood cells as a result of antibody reaction. c. liver's inability to bind bilirubin adequately for excretion. d. immature kidneys' inability to hydrolyze and excrete bilirubin.