A nurse is teaching a client about the nervous system.
Which of the following neurotransmitters should the nurse include in the teaching as having an inhibitory action?
Serotonin
GABA
Acetylcholine
Dopamine
Dopamine
The Correct Answer is B
Choice A rationale
Serotonin is indeed an inhibitory neurotransmitter. It helps regulate mood, appetite, and sleep among other things. However, its role in the nervous system is complex and it can also have excitatory effects depending on the specific receptors and neural pathways involved.
Choice B rationale
Gamma-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter in the brain. It works by decreasing neuronal excitability, which helps to regulate muscle tone, among other functions.
Choice C rationale
Acetylcholine is primarily an excitatory neurotransmitter, although it can have inhibitory effects in certain parts of the nervous system. It plays a key role in muscle activation, learning, and memory.
Choice D rationale
Dopamine can act as both an inhibitory and an excitatory neurotransmitter, depending on the type of receptor it binds to and the specific neural pathway involved. It plays key roles in reward, motivation, and motor control.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Pulmonary embolus is a serious condition that can occur due to prolonged immobility, but it is not directly related to the timing of enteral nutrition in a client with increased intracranial pressure.
Choice B rationale
Bacterial translocation refers to the migration of bacteria from the gut to other areas of the body. Early enteral nutrition (within 24 to 48 hours) in critically ill patients can help maintain the integrity of the gut mucosa and prevent bacterial translocation. Therefore, starting enteral nutrition within this timeframe can help prevent bacterial translocation.
Choice C rationale
Deep vein thrombosis, like pulmonary embolus, is a risk due to immobility but is not directly related to the timing of enteral nutrition.
Choice D rationale
Myocardial infarction is a cardiac event that could be related to overall cardiovascular health, stress, or specific injury to the cardiac muscle. It is not directly prevented by the initiation of enteral nutrition.
Correct Answer is B
Explanation
Choice A rationale
A patient reporting a burning sensation is a subjective sign of pain. It relies on the patient’s personal experience and verbal report.
Choice B rationale
A patient grimacing when they move is an objective sign of pain. It is observable and does not rely on the patient’s verbal report.
Choice C rationale
A patient rating their pain as an 8 on a scale of 0 to 10 is a subjective sign of pain. It relies on the patient’s personal experience and verbal report.
Choice D rationale
A patient stating the pain is located in their abdomen is a subjective sign of pain. It relies on the patient’s personal experience and verbal report.
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