atropine (ăt`rəpēn, –pĭn), alkaloid drug derived from belladonna belladonna (bĕlədŏn`ə) or deadly nightshade, poisonous perennial plant, Atropa belladona,
..... Click the link for more information. and other plants of the family Solanaceae (nightshade family). Available either as the tincture or extract of belladonna, or as the pure substance atropine sulfate, it is a depressant depressant, any one of various substances that diminish functional activity, usually by depressing the nervous system . Barbiturates , sedatives , alcohol, and meprobamate are all depressants. Depressants have various modes of action and effects.
..... Click the link for more information. of the parasympathetic nervous system nervous system, network of specialized tissue that controls actions and reactions of the body and its adjustment to the environment. Virtually all members of the animal kingdom have at least a rudimentary nervous system.
..... Click the link for more information. . It has some chemical similarity to the body substance acetylcholine acetylcholine (əsēt'əlkō`lēn), a small organic molecule liberated at nerve endings as a neurotransmitter .
..... Click the link for more information. and interferes with nerve impulses transmitted by that substance. Atropine produces rapid heart rate, dilated pupils, dry skin, and anesthetizes the nerve endings in the skin. Because it relaxes smooth muscle and suppresses gland and mucous secretions, it has been used to treat peptic ulcer by reducing the production of stomach acid. Atropine is given before general anesthesia to keep the air passages clear and is an ingredient in various preparations for symptomatic relief of colds and asthma. It also acts as an antidote in poisoning from such agents as mushrooms, morphine, prussic acid, and nerve gas, but overdosage causes delirium, convulsions, and coma. A related alkaloid, scopolamine scopolamine (skōpŏl`əmēn, –mĭn) or hyoscine
..... Click the link for more information. , is used mainly as a sedative sedative, any of a variety of drugs that relieve anxiety. Most sedatives act as mild depressants of the nervous system, lessening general nervous activity or reducing the irritability or activity of a specific organ.
..... Click the link for more information. .

atropine

Anticholinergic drug. A poisonous, crystalline alkaloid derived from certain nightshade plants, especially Egyptian henbane, atropine is used chiefly to dry up bodily secretions, to dilate the bronchi, to prevent excessive cardiac slowing during anesthesia, and in ophthalmology to dilate the pupil of the eye. It works by suppressing the parasympathetic nervous system. Atropine is also used as an antidote for nerve gas poisoning.

atropine, atropin

a poisonous alkaloid obtained from deadly nightshade, having an inhibitory action on the autonomic nervous system. It is used medicinally in pre-anaesthetic medication, to speed a slow heart rate, and as an emergency first-aid counter to exposure to chemical warfare nerve agents. Formula: C₁₇H₂₃NO₃

atropine [′a·trə‚pēn]

(pharmacology)

C₁₇H₂₃O₃N An alkaloid extracted fromAtropa belladonnaand related plants of the family Solanaceae; used to relieve muscle spasms and pain, and to dilate the pupil of the eye.

atropine (redirected from Atripine)

atropine

atropine
(redirected from Atripine)