is the largest part of nervous system, including the brain and the spinal cord
Sensory Nervous System
Motor Nervous System
Autonomic Nervous System
Sympathetic Nervous System
action
impending danger or stress. it is responsible for increase of one's heartbeat and blood pressure, among other physiological changes, among with sense of excitement one feels due to increase in adrenaline in system
Adrenergic agonist (ON)
non selective alpha and beta
adrenaline, dopamine, ephedrine, amphetamine
alpha agonists
alpha 1
phenylephrine, methoxamine, mephentermine, metaraminol, oxymetazoline, xylometazoline
alpha 2
clonidine
beta agonists
beta 1 dobutamine
beta 2
salbutamol, terbutaline, salmeterol
Aderengic antagonist (OFF)
Alpha blockers
beta blockers
Parasympathetic Nervous System
is responsible for
constriction of the pupil, slowing of heart, dilation of blood vessels, and stimulation of digestive and genitourinary system.
Cholinergic antagonist (OFF)
muscarinic
nicotinic
Cholinergic agonist (ON)
acetylcholine, methacholine, carbachol, bethanechol
pilocarpine,muscarine
physostigmine, neostigmine, edrophonium,organophosphates
Somatic Nervous System
voluntary responses