Pharmacology of the autonomic nervous system Flashcards

(44 cards)

1
Q

what is the ANS

A

integrated and involuntary. includes motor nerves

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2
Q

what are the two main NT

A

NA and AcH

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3
Q

NT of Somatic NS

A

AcH

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4
Q

NT of ANS Sympathetic

A

AcH to the ganglion then NA

AcH to the medulla then A and NA

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5
Q

NT of ANS Parasympathetic

A

AcH to the ganglion

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6
Q

Somatic NS effoctor organ

A

skeletal muscle

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7
Q

Autonomic NS effoctor organ

A

smooth muscle
glands
cardiac muscle

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8
Q

side effects of muscarin
Aminata muscaria
Inocybe

A
Miosis
Salivation
Lacrimation
Perspiration
Vomiting
Diarrhoea
Bradycardia
Confusion
Coma
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9
Q

The actions of the parasympathetic system include:

A

a decrease of the rate and force of the heart beat
increased activity of the digestive system
emptying of the urinary bladder
erection of the genital (erectile) tissue
secretion of the salivary and lacrimal glands

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10
Q

where are the The cell bodies of the preganglionic neurons are located

A

located in the brain stem and in S2-4.

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11
Q

what mimics the PSNS

A

agonists

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12
Q

what inhibits the PSNS

A

antagonists

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13
Q

what is the side effect of cholinergic neurone- nicotinic

A
ACUTE
Miosis
Salivation
Lacrimation
Perspiration
Vomiting
Diarrhoea
Tachycardia
Hypertension
Tachypnea
Agitation
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14
Q

Nicotinic receptors

A

Ligand gated ion channels
Depolarisations
Nerve to nerve -ganglia
Nerve to muscle

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15
Q

Muscarinic receptors

A
G protein receptor 7TM
ATP
Indirect
Depolarise, secretion contraction
Not on motor end plate
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16
Q

Presynaptic Uptake blocker

A

Hemicholinium

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17
Q

Presynaptic Pre-Uptake release blocker

A

botulinium

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18
Q

Clostridium botulinum

A

10-12 g

NOT SPECIFIC

19
Q

Synaptic Calabar beans

A

ANS STIMULATION
CNS STIMULATION
Muscle fasiculation
Death

Nerve gases
Insecticides

20
Q

Synaptic.Cholinesterase inhibitors

A
Tissue
Plasma (pseudo
Edrophonium
Neostigmine
Pyridostigmine
MG & Anaesthesia
competitive
21
Q

Synaptic.Cholinesterase inhibitorsIRREVERSIBLE

A

PRALIDOXIME-REACTIVATES

22
Q

POST SYNAPTIC-NICOTINIC

A
CURARE
TUBOCURARINE
FLACCID PARALYSIS
MUSCLE RELAXATION
RESPIRATION
COMPETITIVE ANTAGONIST
23
Q

Atracurium

24
Q

Pancuronium

25
Mivacurium
labile in plasma
26
POST SYNAPTIC-NICOTINIC
TONIC PARALYSIS in birds- man? RESPIRATION DEPOLARISING agonist---block
27
Suxamethonium
Rapid on off Cholinesterase pharmacogenomics
28
POST SYNAPTIC-MUSCARINIC
Deadly nightshade Belladonna Atropine
29
Circular-
Psymp
30
Radial-
Symp
31
Muscarinic receptor drugsAntagonists
Atropine, Scopolamine (Hyoscine) - secretions, bradycardia (A only), gut hypermotility -H motion sickness, depressant rather than stimulant Tropicamide -opthalmology
32
Muscarinic receptor drug Agonist-
Pilocarpine -glaucoma
33
The (nor)Adrenergic neurone
``` Tachycardia Hypertension Pallor Mydriasis Bronchodilation ```
34
The functions of the sympathetic system include:
acceleration of the heart and increase in the force of heart beat rise of arterial blood pressure, direction of blood flow from the viscera to the limbs dilatation of the bronchi (NOT) Elevation of blood sugar - adrenaline
35
what is the SymNS mimicked by
agonists
36
what is the SymNS inhibited by
antagonists
37
PRESYNAPTIC Inhibition of Synthesis methyltyrosine
``` Uptake 1 blockers Cocaine Uptake 1 blockers Tricyclic antidepressants-desipramine Potentiate endogenous NAd ```
38
PRESYNAPTICIndirectly acting sympathomimetics
Tyramine | Amphetamines
39
Synaptic MAO inhibitors
``` All mono amines Type A and B phenelzine Anti depressants see -CNS lectures ANS interaction through food and wine ```
40
Post Synapticalpha and beta adrenoreceptors
Agonists Noradrenaline> adrenaline> isoprenaline> salbutamol Shock Asthma
41
Alpha and beta selectivity
Alpha-usually ANS | Beta usually humeral
42
Post Synapticalpha and beta adrenoreceptors
Alpha antagonists Phenoxybenzamine non selective Prazosin alpha-1selective LIMITED USE IN HYPERTENSION
43
Post Synapticalpha and beta adrenoreceptorsAntagonists
``` Propranolol Beta 1 and 2 Asthmatics bronchospasm Beta-1 Atenolol beta-1 cardio-selective ```
44
Post Synapticalpha and beta adrenoreceptorsAgonists
``` Beta-1 Dobutamine Dopamine Beta-2 Salbutamol Terbutaline Salmeterol ```