In contrast to the sympathetic nervous system, the functions of the parasympathetic nervous system include:
sweating
Pupil dilation
Vasoconstriction
Anabolism
The Correct Answer is D
A) Sweating: Sweating is a function of the sympathetic nervous system, not the parasympathetic nervous system. The sympathetic nervous system is responsible for the "fight or flight" response, which includes activating sweat glands. The parasympathetic system, in contrast, is more involved in "rest and digest" functions.
B) Pupil dilation: Pupil dilation (mydriasis) is mediated by the sympathetic nervous system through the activation of alpha-1 adrenergic receptors. The parasympathetic system causes pupil constriction (miosis) by stimulating muscarinic receptors in the eye, which is the opposite of pupil dilation.
C) Vasoconstriction: Vasoconstriction (narrowing of blood vessels) is generally a
function of the sympathetic nervous system, which releases norepinephrine to constrict blood vessels and increase blood pressure. The parasympathetic system typically causes vasodilation (widening of blood vessels) to promote relaxation and decreased blood pressure.
D) Anabolism: Anabolism refers to the metabolic processes that build up molecules and store energy, such as protein synthesis, cell growth, and energy storage. This is primarily mediated by the parasympathetic nervous system, which is involved in "rest and digest" functions. The parasympathetic system promotes activities that support energy conservation, digestion, and tissue repair, all of which support anabolic processes.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) Reversal of bronchoconstriction: Narcotic antagonists are not used to reverse bronchoconstriction. Bronchoconstriction is typically managed with bronchodilators (such as beta-agonists) or corticosteroids. Narcotic antagonists, such as naloxone, specifically counteract the effects of opioids, not respiratory conditions like bronchoconstriction.
B) Reversal of tachycardia: Narcotic antagonists do not have an effect on reversing tachycardia. Tachycardia may result from various conditions, including stimulant use, dehydration, or heart conditions. Treatment for tachycardia typically involves addressing the underlying cause, such as using beta-blockers for cardiac issues, but not narcotic antagonists.
C) Treatment of alcohol dependence: While certain medications, like disulfiram or acamprosate, are used to treat alcohol dependence, narcotic antagonists are not typically indicated for alcohol dependence. Narcotic antagonists, such as naloxone, are primarily used for opioid overdose or dependence, not for alcohol use disorders.
D) Treatment of narcotic dependence: Narcotic antagonists, such as naloxone, are prescribed in the treatment of narcotic (opioid) dependence. These medications work by blocking the effects of opioids at the receptor sites, thereby preventing the "high" associated with opioid use. They are particularly useful in treating opioid overdoses and can also be used in the management of opioid addiction as part of a comprehensive treatment plan.
Correct Answer is D
Explanation
A) Increase in mental acuity: Beta-adrenergic blockers (beta-blockers) do not directly affect mental acuity. In fact, some beta-blockers may cause side effects like fatigue or drowsiness, which can affect mental sharpness. Beta-blockers primarily focus on cardiovascular effects, not cognitive function, making this an unlikely therapeutic goal for their use.
B) Slowing of gastrointestinal motility: Beta-blockers can reduce sympathetic nervous system activity, which may indirectly affect the gastrointestinal system. However, slowing gastrointestinal motility is not a primary therapeutic goal of beta-blocker therapy. The main action of beta-blockers is in the cardiovascular system, not in regulating GI function.
C) Decreased production in gastric acid: Beta-blockers do not significantly reduce gastric acid production. Medications such as proton pump inhibitors or H2 blockers are typically used for managing gastric acid production or reflux. Beta-blockers focus on reducing the workload of the heart and controlling blood pressure, not on acid secretion.
D) Reduction in the heart rate and blood pressure: The primary therapeutic effect of beta-blockers is the reduction of heart rate (negative chronotropic effect) and blood pressure (due to reduced cardiac output and inhibition of the sympathetic nervous system). This is especially beneficial for managing conditions like hypertension, heart failure, and arrhythmias. It is the most likely goal of beta-blocker therapy prescribed by the provider.
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
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
