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 ["A","B","C","D","E"]
Explanation
Choice A rationale: Clients with epilepsy are at high risk of injury from falls during seizures due to sudden loss of consciousness or motor control. Climbing ladders increases the risk of severe trauma, including head injuries and fractures, if a seizure occurs at height. The American Epilepsy Society recommends avoiding elevated surfaces without safety measures. Neurological unpredictability in epilepsy necessitates minimizing exposure to high-risk environments to prevent secondary injuries during seizure episodes.
Choice B rationale: Swimming alone is contraindicated for clients with epilepsy due to the risk of drowning if a seizure occurs in water. A partner can provide immediate assistance, ensuring airway patency and preventing submersion. The CDC and Epilepsy Foundation emphasize supervised aquatic activity. Seizures may cause loss of consciousness or muscle control, making it impossible for the individual to self-rescue. Even brief seizures can lead to aspiration or hypoxic injury if not promptly addressed by a nearby observer.
Choice C rationale: Driving restrictions for clients with epilepsy vary by jurisdiction, but most guidelines, including those from ATI and the Epilepsy Foundation, recommend a seizure-free period of 6 to 12 months before resuming driving. This is based on the risk of sudden incapacitation while operating a vehicle, which endangers both the driver and the public. A 3-month seizure-free period is insufficient and not evidence-based. Neurological stability must be demonstrated over a longer duration to ensure safety.
Choice D rationale: Power tools pose a significant hazard to individuals with epilepsy due to the potential for sudden seizure activity during operation. These tools often involve sharp, fast-moving components that can cause severe injury if control is lost. The Occupational Safety and Health Administration (OSHA) advises against unsupervised use of such equipment by individuals with seizure disorders. Seizure unpredictability necessitates avoiding machinery that requires continuous attention and motor coordination to prevent traumatic injuries.
Choice E rationale: During a seizure, especially a generalized tonic-clonic seizure, it is critical to gently guide the client to the floor to prevent injury from falling. This position helps reduce the risk of head trauma and allows for safer seizure progression. The floor provides a stable surface, minimizing the chance of secondary injury. The nurse should also clear the area of sharp objects and cushion the head to protect the client during convulsions, as recommended by seizure first aid protocols.
Choice F rationale: Positioning a client on their back during postictal recovery is contraindicated due to the risk of airway obstruction. Seizures often result in decreased consciousness, increased oral secretions, or vomiting. The supine position can lead to aspiration or hypoxia. Instead, the recovery position—lying on the side—facilitates drainage of secretions and maintains airway patency. The American Red Cross and Epilepsy Foundation recommend side-lying recovery to reduce respiratory complications and promote safe postictal recovery.
Correct Answer is A
Explanation
Choice A rationale
Nausea and vomiting are common symptoms associated with migraines. Asking about these symptoms can help confirm a diagnosis of a migraine.
Choice B rationale
Sensitivity to light, also known as photophobia, is a common symptom of migraines. However, the question “Are the lights in here bothering you?” is less specific to migraines as it could be indicative of several other conditions as well.
Choice C rationale
While confusion or clouded thinking can occur with migraines, it is not as common as other symptoms such as nausea, vomiting, and sensitivity to light.
Choice D rationale
Unusual smells, known as olfactory hallucinations, are not typically associated with migraines. They are more commonly associated with conditions such as epilepsy.
Choice E rationale
Weakness before the headache started or currently feeling weak now is not a typical symptom of migraines. It could be indicative of a more serious condition, such as a stroke.
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