Sympathomimetics are drugs that mimic which body's response?

• A. Sympathetic response
• B. Parasympathetic response
• C. Endocrine response
• D. Immune response

Answer: (A)

The main idea is that sympathomimetics imitate the body's sympathetic nervous system. They stimulate adrenergic receptors (alpha and beta) to reproduce the effects of catecholamines like norepinephrine and epinephrine. This produces fight-or-flight–type responses: increased heart rate and contractility, bronchodilation, pupil dilation, and sometimes vasoconstriction in certain vessels. These drugs are not mimicking the parasympathetic effects (which would slow the heart, constrict bronchi, etc.), nor are they simply hormones circulating in the bloodstream (endocrine) or immune system reactions. By directly activating sympathetic pathways, sympathomimetics reproduce those rapid, coordinated bodily responses.