Which of the following catecholamines may have a vasodilator effect on the renal blood vessels and be prescribed for clients in shock who are experiencing renal insufficiency manifestations?
A) Enkephalin
B) Norepinephrine
C) Dopamine
D) Acetylcholine
Ans: C
Feedback:
The catecholamines, which include norepinephrine, epinephrine, and dopamine, are synthesized in the sympathetic nervous system and are the neurotransmitters for most postganglionic sympathetic neurons. Dopamine, which is an intermediate compound in the synthesis of norepinephrine, also acts as a neurotransmitter. It is the principal inhibitory transmitter of interconnecting neurons in the sympathetic ganglia. It also has vasodilator effects on renal, splanchnic, and coronary blood vessels when given intravenously and is sometimes used in the treatment of shock. Endorphins and enkephalins are involved in pain sensation and perception. Acetylcholine is the transmitter for all preganglionic neurons, for postganglionic parasympathetic neurons, and for selected postganglionic sympathetic neurons.
You might also like to view...
Having a response to an inert substance given in place of an active drug is called
A. paranoia. B. the placebo effect. C. the set effect. D. delusion.
Using the textbook's definition of the characteristics of sport, which of these would be considered a sport?
A. Skeet shooting B. Ropes course C. Scuba diving D. Each of these activities is considered a sport
Life expectancy and physiological age prediction are based on best-case-scenario lifestyle habits.
Answer the following statement true (T) or false (F)
What is the overall goal of health education?
A. to have students adopt and maintain healthy behaviors B. to disseminate health information C. to give students an interactive way to model relevant social skills D. to develop productive adults