Which neurotransmitter has both muscarinic and nicotinic receptor subtypes?

Serotonin

Acetylcholine

Dopamine

Gamma-aminobutyric acid (GABA)

Answer and Explanation

The Correct Answer is B

Choice A reason: Serotonin acts on 5-HT receptors, not muscarinic or nicotinic subtypes. It modulates mood and behavior but lacks the receptor diversity of acetylcholine. Serotonin’s receptors are G-protein-coupled or ligand-gated, unrelated to muscarinic or nicotinic mechanisms, making it incorrect for this neurotransmitter classification.

Choice B reason: Acetylcholine binds to muscarinic (G-protein-coupled) and nicotinic (ligand-gated) receptors. Muscarinic receptors regulate parasympathetic functions like heart rate, while nicotinic receptors mediate muscle contraction and CNS signaling. This dual receptor system is unique to acetylcholine, making it the correct neurotransmitter for this question.

Choice C reason: Dopamine acts on D1 and D2 receptors, not muscarinic or nicotinic subtypes. It regulates reward and motor functions but lacks the cholinergic receptor classifications. Dopamine’s receptors are G-protein-coupled, not ligand-gated like nicotinic, making it an incorrect choice for this neurotransmitter property.

Choice D reason: GABA binds to GABA-A (ligand-gated) and GABA-B (G-protein-coupled) receptors, not muscarinic or nicotinic. It inhibits neural activity, unrelated to cholinergic systems. GABA’s receptors mediate inhibitory signaling, not the excitatory or parasympathetic functions of muscarinic/nicotinic receptors, rendering it incorrect for this question.

Nursing Test Bank

Test Bank #1: RN Pharmacology Exams Test Bank #2: RN Medical-Surgical Exams Test Bank #3: RN Fundamentals Exams Test Bank #4: RN Maternal-Newborn Exams Test Bank #5: RN Anatomy and Physiology Exams Test Bank #6: RN Obstetrics and Pediatrics Exams Test Bank #7: RN Fluid and Electrolytes Exams Test Bank #9: RN Adult Health Test Bank #10: RN Dosage Calculation Test Bank #11: RN Community Health Exams Test Bank #12: RN Psychology Exams Test Bank #13: RN Nursing Care Of Children Test Bank #14: RN Foundations of Nursing Exams

Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Exam #1: RN Comprehensive predictor 2023 proctored exam Exam #2: Ati rn vati comprehensive predictor proctored exam Exam #3: Ati Rn Comprehensive Predictor Proctored Exam 2023 Exam #4: Rn Comprehensive Predictor 2023 Proctored Exam - St. Joseph Exam #5: RN Comprehensive Predictor Proctored Exam (National U CA San Diego) Exam #6: Ati rn comprehensive predictor 2023 retake proctored exam Exam #7: RN Hesi Exit Proctored Exam Exam #8: Hesi RN Exit proctored exam Exam #9: Hesi rn exit proctored exam Exam #10: Hesi Rn compass exit B proctored exam

Free Nursing Study Resources

Correct Answer is A

Explanation

Choice A reason: Confidentiality can be breached if a patient poses a threat to others, as in Tarasoff rulings, due to safety risks from delusions driven by dopamine dysregulation. This legal and ethical exception ensures protection, aligning with psychiatric principles prioritizing harm prevention over absolute confidentiality.

Choice B reason: Absolute confidentiality is incorrect, as exceptions exist for safety. Delusions, linked to mesolimbic dopamine excess, may lead to threats requiring disclosure. Legal frameworks allow breaching confidentiality to protect others, making this response scientifically and ethically inaccurate for psychiatric practice.

Choice C reason: Law enforcement inquiries do not automatically override confidentiality. Disclosure is limited to specific legal mandates, like imminent danger from dopamine-driven delusions. Routine questions do not justify breaches, making this response incorrect for the ethical and legal standards in psychiatric care.

Choice D reason: Confidentiality breaches are not solely at the psychiatrist’s discretion. Legal and ethical guidelines, like those for threats from delusional states, dictate exceptions. This option oversimplifies complex regulations, ignoring standardized protocols for managing risks in psychiatric patients, making it incorrect.

A. “I don’t have any problems.” B. “I don’t know how talking about things twice a week can help.” C. “I want to find a way to deal with my anger without becoming violent.” D. “It is so difficult for me to talk about my problems.”

Correct Answer is C

Explanation

Choice A reason: Denying problems reflects resistance, typical in the orientation phase, where trust is not yet established. Anger management, linked to amygdala-driven impulsivity, requires a therapeutic alliance. This statement indicates avoidance, not readiness for the working phase’s collaborative problem-solving.

Choice B reason: Questioning therapy’s value shows skepticism, common in the orientation phase. The working phase involves active goal-setting, like managing anger tied to serotonin dysregulation. This statement reflects a lack of engagement, not the transition to collaborative therapeutic work, making it incorrect.

Choice C reason: Expressing a goal to manage anger indicates readiness for the working phase, where collaborative problem-solving occurs. Anger, linked to amygdala hyperactivity and serotonin deficits, requires active intervention. This statement shows commitment to addressing neurobiological issues, marking the transition to the working phase.

Choice D reason: Difficulty discussing problems reflects orientation phase challenges, where trust is building. The working phase involves active engagement, like addressing anger’s neurobiological basis. This statement indicates discomfort, not readiness for collaborative work, making it incorrect for the phase transition.

View Question and Answer

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Which neurotransmitter has both muscarinic and nicotinic receptor subtypes?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The spouse of a patient who experiences delusions asks the nurse, “Are there any circumstances under which the treatment team is justified in violating the patient’s right to confidentiality?” What is the nurse’s best response?

Correct Answer is A

Explanation

Which remark by a patient indicates passage from the orientation phase to the working phase of a nurse-patient relationship?

Correct Answer is C

Explanation

After several therapeutic encounters with a patient who recently attempted suicide, which occurrence should cause the nurse to consider the possibility of countertransference?

A patient is taking a first-generation antipsychotic medication. What should the nurse teach about the drug’s strong dopaminergic effect?

A patient presents with anxiety, increased heart rate, and fear. The nurse suspects the activation of which neurotransmitter?

What best explains the importance of epidemiology in understanding the impact of mental disorders?

Several nurses are concerned that agency policies related to restraint and seclusion are inadequate. Which statement about the relationship of substandard institutional policies and individual nursing practice should guide nursing practice?

A patient prescribed a muscarinic-receptor blocker will require assessment for what side effect?

A patient reports experiencing performance anxiety in front of an audience. The nurse should be aware that this type of anxiety is often treated with which medication?

A nursing student says, “Little of what takes place on the behavioral health unit seems to be theory-based.” A nurse educates the student by identifying which is a common use of Sullivan’s theory on the inpatient psychiatric unit?