See Also: liquid crystal(encyclopedia)
liquid crystal display (LCD)(encyclopedia)
receptors, adrenergic, alpha-2(medicine)
receptors, adrenergic, alpha-1(medicine)
receptors, adrenergic, alpha(medicine)
Alpha-adrenergic receptors(medicine)
adrenergic alpha-agonists(medicine)
adrenergic alpha-antagonists(medicine)
alpha-adrenergic blocking agent(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)

Alpha-adrenergic receptors (medicine) and liquid crystal (sh)


Alpha-adrenergic receptors (medicine)


alpha-adrenergic receptors
Adrenergic receptor's in effector tissues capable of selective activation and blockade by drugs; conceptually derived from the ability of certain agents, such as phenoxybenzamine, to block only some adrenergic receptor's and of Other agents, such as methoxamine, to activate only the same adrenergic receptor's. Such receptor's are designated as alpha-receptors. Their activation results in physiological responses such as increased peripheral vascular resistance, mydriasis, and contraction of pilomotor muscles.


liquid crystal (sh)




Substance that flows like a liquid but maintains some of the ordered structure characteristic of a crystal.

Some organic substances do not melt directly when heated but instead turn from a crystalline solid to a liquid crystalline state. When heated further, a true liquid is formed. Liquid crystals have unique properties. The structures are easily affected by changes in mechanical stress, electromagnetic fields, temperature, and chemical environment. See also liquid crystal display.