DECK 1 - SYMPATHETIC VS PARASYMPATHETIC Flashcards
What are the branches of the nervous system?
somatic and autonomic
What are the two autonomic divisions?
sympathetic and parasympathetic (fight/flight, feed/breed)
generalize what activating sympathetic system will do-
OPEN LUNGS, SQUEEZE VEINS, SPEED HEART, SLOW DIGESTION/URINE, INCREASE SWEAT, DILATE PUPILS
generalize what activating the parasympathetic system will do-
CLOSE LUNGS, OPEN VEINS, SLOW HEART, SPEED DIGESTION, CONSTRICT PUPILS
What nerves for the sympathetic and parasypathetic?
Thoracolumbar (S) and craniosacral (P)
generic name of sympathetic transmitters
catacholamines
Chief parasympathetic transmitter
Acetylcholine
What are the major catacholamines?
epinephrine, norepinephrine (and dopamine)
sympathetic receptors are called _____
adrenergic receptors (think adrenaline)
parasympathetic receptors are called ____
cholinergic receptors (acetylCHOLINE)
What is acetylcholine?
parasympathetic receptor
cholenergic agonist will___
activate parasympathetic - rest digest
adrenergic agonists will___
activate sympathetic -feed breed
cholinergic antagonist will __
prevent cholinergic receptors from working - helping sympathetic.
adrenergic antagonist will ___
prevent andrenergic receptors from working - helping parasympathetic.
Norepinephrine/ Epinephrine are trasmitters for
sympathetic
other names for epinephrine and norepinephrine? (in the UK)
adrenaline and noradrenaline
How and where are epinephrine and norepinephrine made and when are they released?
Norepinepherine is made in the adrenal medula (adrenal gland behind the kidneys), synthesized from dopamine. It is released all the time. In times of stress, the norepi is synthesized into epinepherine. (dopamine becomes norepinepherine becomes epinepherine)
Where is a little bit of norepi and epi produced?
Although made mostly in the adrenal glands, some is made in the brain- medulla oblongata - synthesized from proteins.
Is epinepherine contiuously produced?
Epinepherine is only produced in times of stress. It is made from norepinephrine. Both epi and norepi production increases in FIGHT FLIGHT.
Is norepinepherine coutinuously produced?
norepinepherine is always being produced from dopamine in the medula. It is the primary transmitter of the sympathetic nervous system. Production increases in FIGHT/FLIGH
where is acetylcholine produced?
in nerve endings- MADE FROM CHOLINE
what does acetylcholine do to body?
bronchoconstriction, decrease in heartrate, force and conductivity, increases disgestion (smooth muscle contraction: lungs, bladder, gastro), constricts pupils
what do the cholamines (epi/norepi/dope) do to body?
bronchodilation, vasoconstriction, increased heart rate/force/conductivity slows digestion/urine (smooth muscle relaxer: lungs, bladder, GI), constricts pupils.
Do epinepherine and norepinepherine do the same thing?
Day to day, norepinephrine controls vasoconstricion. During fight/flight when epi is released, they act similar but Norepi considered more vascular, Epi more cardiac, but both do it all
What are the receptors for the sympathetic system called? (and where?)
A1- vascular A2- vascular B1 heart B2 lungs Dopamine(coronary arteries, renal vessels)
What are the receptors for the parasympathetic system? (and where?)
Nicotinic and Muscarinic in the smooth muscles and glands, some in the heart and other places
where are smooth muscles located?
Smooth muscle is found in the walls of hollow organs: stomach, iintestines, bladder, uturus and in blood/lumph vessels and the tracts of resp,urinary and reproductive system.
What are muscarinic and nicotinic ?
receptors for parasympathetic
Nicotinic receptor- agonistic effect
speeds up digestion - squeeze smooth muscles
muscarinic 2 receptors?
located in heart - slows down heart B1 ANTAGONIST- also speeds up digestion
What does epinepherine do to body? (what receptors)
Vasoconstriction, increase heart rate, force, heart conduction velocity, bronchodilation and vasodilation in lungs - A1, B1, B2
What does norepinepherine do to the body (what receptors)
Day to day, norepinepherine works primarily on vasoconstriction, A1. Fight/Flight, norepi acts like, or assists epi: A1, B1, B2
How does dopamine behave? (what receptors?)
high doses: squeeze veins and speeds heart..
A1 vasoconstrict, B1 increase heart rate (+chronotrope), force (+inotrope), electric velocity (+dromotrope).
Inhaled it bronchodilates also.
LOW DOSES on D1 and D2 receptors
a drug that impacts heart rate is called-
chronotrope (chronological time) can be + or -
a drug that alter force of contraction is called ? (heart)
inotrope
(“the force, I know” yoda) can be + or -
drugs that alter conduction velocity in the heart are called?
dromotrope
(hit the DRUM to change conduction and AV speed(automoticity) can be + or -
positive chronotrope will ___
increase heart rate
(chronological- time)
positive inotrope will __
increase contraction force (the force, I know)
positive dromotrope will ___
increase heart conduction speed (Conductor, hit the drum to change speed ) - impacts automaticity, impacts noded- how fast signals go throught the heart and from SA-AV-his bundle-bundle branches- perkinje fibers
negative chronotrope will ___
slow heart rate
negative inotrope will ___
decrease heart force
negative dromotrope will ___
slow heart conduction speed
(slow electric activity in heart)
A1 receptor
peripheral vasoconstriction increase BP
A2 receptor
peripheral vasodilation decrease BP
B1 receptor
Increase heart rate/force/automaticity and conduction (positive chronotope, inotrope and dromotrope)
B2 receptors
Bronchodilation, uterine and GI smooth muscle relaxation- SLOWS DIGESTION AND URINATION
catacholamine vs acetylcholine
acetylcholine REST/DIGEST transmitter (parasympathetic).
Catacholamines are epi/norepi/dope- the FIGHT/FLIGHT transmitters. (siympathetic)
____MIMETIC
MIMICS or resembles
____LYTIC
BLOCKS-
ANTI____
WORKS AGAINST/BLOCKS
___ ERGIC
resembles- like-
agonist
activates
antagonist
deactivates
catacholamine
the transmitters epi/norepi/dope HELPS FIGHT/FLIGHT
acetylcholine
the transmitter for parasymp HELPS REST/DIGEST
Sympathomimetic
mimics sympathetic-HELPS FIGHT/FLIGHT
Anticholoinergenic
works against cholinergenic- HELPS FIGHT/FLIGHT
cholinergenic
like acetylcholine HELPS REST/DIGEST
parasympathomimetic
mimics parasympathetic- HELPS REST/DIGEST
Sympatholytic
blocks sympathetic- HELPS REST DIGEST
Parasymatholytic
blocks parasympathetic- HELPS FIGHT/FLIGHT
Adrenergic
resembles adrenaline HELPS FIGHT/FLIGHT
Adrenergic Blocker
blocks adrenaline like stuff HELPS REST/DIGEST
Cholinergic Blocker
Blocks acetylcholine HELPS FIGHT/FLIGHT
Sympathetic Blocker
blocks sympathetic- HELPS REST DIGEST
which division increases digestion?
PARASYMPATHETIC - nicotinic and muscarinic
which division decreases digestion?
SYMPATHETIC- alpha tightens sphincters and beta slows the walls
which division causes periphereral vasoconstriction?
SYMPATHETIC- alpha 1
which division causes peripheral vasodilation?
SYMPATHETIC- alpha 2
which division causes brochodilation?
SYMPATHETIC- beta 2- need to breath when fighting
which division causes bronchoconstriction?
PARASYMPATHETIC - muscarinic
Which division increases heart rate and force and conduction speed?
SYMPATHETIC- BETA 1
which division decreases heart rate and force and conduction speed?
PARASYMPATHETIC - muscarinic
which division increases sweating?
SYMPATHETIC- sweat when running
which system diates pupils?
SYMPATHETIC- need to see to fight
which system constricts pupils?
PARASYMPATHETIC- no need to see when resting
norepinephrine vs epinephriine vs dopamine receptors
norepinephrine-A1,B1,B2 (A1 daily). Epineprhine A1, B1, B2 dopamine A1, B1
Beta 1 blocker will
block B1: slow heart rate
nonselective Beta Blocker will
block B1 and B2: decrease heart rate and cardiac output, bronchoconstriction