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VET 150 Week 3

Drugs used in the Nervous System

QuestionAnswer
Central Nervous System Brain & Spinal cord Control center of the entire nervous system
Peripheral Nervous System Divided into two main parts: Autonomic and Somatic
Somatic Efferent nerves that carry impulses from the CNS to the skeletal muscle tissue Voluntary, under conscious control
Autonomic Efferent nerves that carry information from the CNS to the cardiac muscle, glands, smooth muscle Involuntary, unconscious control 2 Subdivisions: Sympathetic Nervous System & Parasympathetic Nervous System
CNS drugs act by ______ or blocking the effects of neurotransmitters. mimicking
Parasympathetic Nervous System "Rest & restore" regulates energy-conserving activities Cholinergic Receptors: Nicotinic, Muscarinic Neurotransmitter: Acetylcholine
Sympathetic Nervous System "Fight or Flight" regulates energy-expanding activities Adrenergic Receptors: a1, a2, b1, b2 Neurotransmitters: Epinephrine, Norepinephrine, Dopamine
Alpha 1 Arterioles, urethra, eye
Alpha 2 Skeletal Muscles
Beta 1 Heart, kidneys
Beta 2 Skeletal blood vessels, bronchioles
Dopaminergic Kidneys, heart, mesenteric blood vessels
Cholinergic parasympathominmetics
Cholinergic blocking agents anticholinergics, parasympatholytics
Adrenergic agents sympathomimetics
Adrenergic blocking agents sympathlytics
Cholinergic Agonists Drugs that stimulate cholinergic receptor Used to diagnose myasthenia gravis Reduce IOP in glaucoma
Acetylcholine Seldom used, rapidly broken down by AChE
Carbamylcholine Treats GI atony, stimulate uterine contractions in pigs
Bethanechol Treats GI & urinary tract atony
Pilocarpine Reduces IOP
Metoclopramide (Reglan) Control vomiting, promote GI emptying
Edrophonium (Tensilon) Used to diagnose myasthenia gravis
Pyridostigmine Treatment of myasthenia gravis
Neostigmine Treats urine retention, GI Atony, antidote to neuromuscular blocking agents
Physostigmine same uses as neostigmine
Created by: Acraft02
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