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Class autonomic NERVOUS SYSTEM
1. Dr. RAGHU PRASADA M S
MBBS,MD
ASSISTANT PROFESSOR
DEPT. OF PHARMACOLOGY
SSIMS & RC.
1
2. Central Nervous System (CNS) - Brain and spinal
cord
Peripheral Nervous System (PNS) - Located
outside the brain & spinal cord Autonomic
Nervous System (ANS) & the somatic
The PNS receives stimuli from the CNS & initiates
responses to the stimuli after it’s interpreted by the
brain
7. Acetylcholine –preganglionic
Post ganglionic Ach
Exception-post ganglionic sympathetic fibres to
apocrine glands
Cholinergic fibres
All somatic motar neurons
All preganglionic fibres
Post ganglionic parasympathetic fibres
8.
9. ADRENERGICR
ECEPTOR
LOCATION
BETA 1
RECEPTOR
BETA2 RECEPTOR BETA 3 RECEPTOR
LOCATION HEART AND
JG CELLS IN
KIDNEY
B-BRONCHI
BLOOD VESSELS
U-UTERUS, URINARY TRACT,
L-LIVER
G-GIT
EYE
ADIPOSE TISSUE
SELECTIVE
AGONIST
DOBUTAMINE SALBUTAMOL,
TERBUTALINE
BRL
SELECTIVE
ANTAGONIST
METAPROLOL
ATENOLOL
BUTOXAMINE CYANOPINDOLOL
POTENCY OF
NA AS
AGONIST
MODERATE WEAK STRONG
10. ADRENERGIC
RECEPTOR
ALFA 1 ALFA2
LOCATION POST JUNCTIONAL ON
EFFECTOR ORGANS
PREJUNCTIONAL ON NERVE ENDINGS ,
ALSO POST-J UNCTIONAL IN BRAIN,
PANCREATIC BETA CELLS AND EXTRA
JUNCTIONAL IN BLOOD VESSELS,
PLATELETS
FUNCTION GI SMOOTH MUSCLES-
CONTRACTION
GLAND-SECRETION
GUT- RELAXATION
LIVER-GLYCOGENESIS
HEART-ARRHYTHMIAS
INHIBITION OF TRANSMITTER RELEASE
VASOCONSTRICTION
DECREASED SYMPATHETIC FLOW
DECREASED INSULIN RELEASE
PLATELET AGGREGATION
SELECTIVE
AGONIST
PHENYLEPHRINE
METHOXAMINE
CLONIDINE
SELECTIVE
ANTAGONIST
PRAZOCIN, TERAZOCIN
TAMSULOSIN
YOHIMBINE, ROUWOLCINE
EFFECTIVE
PATHWAY
IP3/DAG, PHOSHOLIPASE
A2
CAMP
K+ channel, Ca CHANNEL, IP3 /DAG