Which of these is a neurotransmitter?

A) Interferon-B (IFN-B): Interferon-beta is a disease-modifying therapy (DMT) used for multiple sclerosis (MS) to reduce the frequency and severity of attacks and slow disease progression. However, it is not typically used during an acute exacerbation of MS. It is more commonly prescribed for long-term management of the disease.
B) Mitoxantrone: Mitoxantrone is an immunosuppressive agent that is used as a disease-modifying therapy for patients with more aggressive forms of MS. While it can be helpful in reducing the frequency of attacks, it is not the first-line treatment during an acute relapse. Mitoxantrone is often considered for long-term use when other therapies are not effective.
C) Glatiramer acetate (Copaxone): Glatiramer acetate is another disease-modifying therapy for MS. It works by altering the immune response to protect the myelin sheath. Like interferon-beta, it is used for long-term management, not for acute attacks. It is not typically used during an exacerbation of MS.
D) Methylprednisolone (Solu-Medrol): Methylprednisolone, a corticosteroid, is the standard treatment for acute exacerbations of multiple sclerosis. It works by reducing inflammation, which helps to decrease the severity of symptoms during an MS relapse. The nurse would anticipate this drug being prescribed to manage the acute inflammatory episode and speed recovery from the attack. This medication is often administered intravenously in high doses and then tapered as the patient stabilizes.

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.