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The mechanisms of sympathomimetic drugs can be direct-acting (direct interaction between drug and receptor), such as α-adrenergic agonists, β-adrenergic agonists, and dopaminergic agonists; or indirect-acting (interaction not between drug and receptor), such as MAOIs, COMT inhibitors, release stimulants, and reuptake inhibitors that increase the levels of endogenous catecholamines.
A sympatholytic (sympathoplegic) drug is a medication that opposes the downstream effects of postganglionic nerve firing in effector organs innervated by the sympathetic nervous system (SNS). [1] They are indicated for various functions; for example, they may be used as antihypertensives .
Sympathetic nervous system, in neurology and neuroscience, a part of the autonomic nervous system; Sympathetic resonance, a harmonic phenomenon wherein a body responds to external vibrations; Sympathetic strings, in music theory, strings on a musical instrument that resonate without contact "Sympathetic", a song by Seether from Disclaimer II
Sympathy is the perception of, understanding of, and reaction to the distress or need of another life form. [1]According to philosopher David Hume, this sympathetic concern is driven by a switch in viewpoint from a personal perspective to the perspective of another group or individual who is in need.
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Neuromuscular junctions, preganglionic neurons of the sympathetic nervous system, the basal forebrain, and brain stem complexes are also cholinergic, as are the receptor for the merocrine sweat glands. In neuroscience and related fields, the term cholinergic is used in these related contexts:
Pity is a sympathetic sorrow evoked by the suffering of others. The word is comparable to compassion, condolence, or empathy. It derives from the Latin pietas (etymon also of piety). Self-pity is pity directed towards oneself. Two different kinds of pity can be distinguished, "benevolent pity" and "contemptuous pity". [1]
Empathic concern refers to other-oriented emotions elicited by, and congruent with the perceived welfare of, someone in need. [1] These other-oriented emotions include feelings of tenderness, sympathy, compassion and soft-heartedness.