Cholinergic neurons release:
A) epinephrine
B) norepinephrine
C) acetylcholine
D) dopamine
C) acetylcholine
Neurons that release acetylcholine are termed cholinergic. These neurons include preganglionic neurons (in the sympathetic and parasympathetic nervous systems), parasympathetic postganglionic neurons, somatic transmission at the neuromuscular junction, and sympathetic postganglionic fibers that innervate sweat glands.
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Which of the following would explain why a person might need an implanted pacemaker device?
A) There is a problem with the electrical system in the heart. B) The heart muscle is damaged and is unable to contract. C) Their potassium levels are too low which prevents depolarization. D) They have malfunctioning valves between the cardiac chambers.
Which of the following is a drug with synergistic action?
a. Acts on the area where it is administered b. Affects a part of the body other than where it was administered c. Affects all bloodstream areas d. Enhances the action of another drug
The instruments pictured here are ________.
A. curettes B. scalpels C. forceps D. retractors E. dilators
After speaking with a patient on the telephone about a clinical issue, a medical assistant must always ________.
A. meet with the physician to discuss the call B. schedule an appointment for the patient C. work a little later to make up for lost time D. document the conversation in the patient's record E. bill the patient for the telephone time