Pharmacology R/T Autonomic Nervous System Flashcards
Onset = immediate
Peak = 2-5 min
Duration = 5-10 min
What method of administration for Andrenergic agonist medication have this mode of action? Which medication is this?
IV Epinephrine
What does Miosis mean?
Med that Causes Pupil Constriction
What are Cholinergic medications most important job?
Blocks the PSNS and
Allows the SNS to TAKEOVER!!
What are all of the effects of Beta 1 receptor activation?
- Heart > Increased Heart Contractility > Increased Heart Rate
- Kidney > Increased Renin Secretion > Increased Angiotensin > Increased BP
Study Tip:
Heart
Kid
What does Paralytic Ileus mean?
No peristalsis in GI Tract
What are all of the effects of Beta 2 receptor activation?
- GI Tract (B/C it’s made out of Smooth Muscle) > Increased Renin Secretion > Increased Angiotensin > Aldosterone > Fluid Retention > Increased BP
- Lungs > Bronchodilation > Increased Oxygenation
- Uterus > Relaxation of Uterus (B/C it’s made out of Smooth Muscle)
- Liver > Activation of Glyconeogenesis > Increased Blood Sugar > Increased Energy
Study Tip:
GULL = Seagulls have loose hanging neck skin.
Equals relaxation of GI tract, bronchioles and uterus.
Liver effects are to create energy without oxygen.
What is the CNS and ANS made up of?
CNS- brain and spinal cord ANS- cervical spinal nerves C1-C8 thoracic spinal nerves T1-T12 lumbar spinal nerves L1-L5 sacral spinal nerves S1-S5
Study Tip: Messages are sent to the brain through the system both voluntarily and involuntarily.
What does the drug Atenolol drug do?
Andrenergic Beta 1 Blocker (Antagonist)
It’s effects are Selective to the Heart
Atenolol Blocks sites that receive norepinephrine > Decreases Renin-Aldosterone > Decreases Cardiac Output > Decreases Blood Pressure > Decreases Heart Rate > Cardiac Workload
Central Nervous System (CNS) + Peripheral Nervous System (PNS) = ________
The Nervous System
Remember the hot stove. Theses work together to adjust to the environment?
- brain
- spinal cord
- cranial nerve I & II
Study Tip:
What are all of the effects of Alpha 1 receptor activation?
- Blood vessels > Vasoconstriction > Increased BP > Increased Cardiac Contractility
- Eye > Mydriasis [Pupil Dilation]
- Bladder > Increased Contraction
- Prostate > Increased Contraction
____________ = Somatic Nervous System(voluntary motor and sensory pathways) + Autonomic Nervous System (Involuntary motor and sensory through control of organs)
PNS
Study Tip: PNS (parasympathetic causes cholinergic response) controls movements and actions
ANS (sympathetic causes andrenergic response) controls movements of organs
________ sympathetic stimulation causes andrenergic response controls movements of organs
ANS
What are all of the effects of Alpha 2 receptor activation?
- Blood Vessels > Decreased BP > Reduce Secretion of NorEpinephrine
- GI Tract (Smooth muscle) > Decreased GI Tone and Motility > Diarrhea
_______ Receptor - causes muscle contractions
Nicotinic
Study Tip: least common cholinergic receptor. This receptor has no medical necessity except for in myasthenia gravis which causes increased muscle contractions worsening the symptoms.
- Cranial nerves III through XII
- Spinal nerves
- Peripheral components of the ANS
Study Tip:
________ parasympathetic stimulation causes cholinergic response controls movements and actions
PNS
The nerves branch off from the spinal cord.
-_____________: carry signal to CNS-are organized by sensory modality and by anatomy
afferent/ascending
Study Tip: these nerves send messages to the brain
The nerves branch off from the spinal cord.
-_____________: towards effector or motor-carry impulses that are responsible to muscle movements
efferent/descending
Study Tip: these nerves send messages to sensory effector or motor organs
What are the functions controlled by the Involuntary Autonomic “automatic” nervous system?
BP HR RR Temperature Water Balance Urination Digestion Metabolism Sweating ANS Study Tip:
Sympathetic (Adrenergic)spinal segments T1-L2 also known as the _________ segments.
preganglionic brainstem/sacral spinal
- cardiac - increase blood circulation by increasing the heart rate to increase oxygenation.
Sympathetic Nervous System Andrenergic response stimulated by what receptor?
Beta 1 cardiac Receptor
Study Tip: oxygenation is increased so that if the person needs to run away in a fight or flight situation they will have enough oxygen to meet the bods demand.
Sympathetic Nervous System stimulates this Andrenergic response = Fight or Flight
What is The Important Neurotransmitter?
NOREPINEPHRINE
Study Tip: Norepi + Epi = adrenalin
- cardiac - blood vessels (vasoconstriction)
Also causes pupil dilation and reduction of urinary output.
Sympathetic Nervous System Andrenergic response stimulated by what receptor?
Alpha 1 Receptor
Study Tip: causes pupils to dilate to increase the persons visual field in a fight or flight situation.
This is geared to act in localized & discrete regions-conserves & restore the body’s energy stores-cardiac muscles, smooth muscle & glands through both efferent and afferent nerves.
Parasympathetic activation stimulating a cholinergic response.
Study Tip: rest and digest
Parasympathetic activation stimulates this cholinergic response.
Rest & Digest
The Most Important Neurotransmitter
ACETYLCHOLINE (ACh)-activate 1postganglionic
Study Tip:
- lungs - blood vessels dilate causing bronchi to accept more oxygen airways become dilated.
Also causes the bladder to relax which keeps the bladder from peeing.
Sympathetic Nervous System Andrenergic response stimulated by what receptor?
Beta 2 Receptor
Study Tip: the body retains the urine to prevent the person from needing to stop and pee if they need to escape a dangerous situation such as fight or flight.
_______ Receptor - causes pupil restriction, increased GI motility and saliva, increase bladder contraction, decrease BP, and decreased heart rate.
Muscarinic
Study Tip: most common cholinergic receptor.
Pupils construct because there is no longer a fear of danger. All of the body systems are going back to normal like in the GAS adaptation phase.
Pharmacologically in the Autonomic Nervous System the ________ sites on the nerves are manipulated to achieve a desired effect. We can give medications to manipulate a desired effect as needed
receptor
Study Tip: meds can be given that increase heart rate by dilating bronchioles and stimulating peristalsis.
When you remember the followings ALWAYS remember its main neurotransmitter.
Adrenergic?
Cholingergic?
Adrenalin
Acetylcholine (ACh)
Study Tip:
Dilates pupils
Is this caused by Parasympathetic or Sympathetic System Activation?
Sympathetic
Study Tip: better vision
Contracts bladder.
Is this caused by Parasympathetic or Sympathetic System Activation?
Parasympathetic
Study Tip: body eliminates retained urine.
Increases heart beat
Is this caused by Parasympathetic or Sympathetic System Activation?
Sympathetic
Study Tip: to increase blood flow and oxygenation.
Constricts pupils
Is this caused by Parasympathetic or Sympathetic System Activation?
Parasympathetic
Bronchodilation
Is this caused by Parasympathetic or Sympathetic System Activation?
Sympathetic
Study Tip: increased oxygenation
Slows heart beat
Is this caused by Parasympathetic or Sympathetic System Activation?
Parasympathetic
Increased GI peristalsis and GI secretions
Is this caused by Parasympathetic or Sympathetic System Activation?
Sympathetic
Study Tip: This occurs so the patient won’t have to stop to poop in a dangerous situation
Stimulates flow of saliva
Is this caused by Parasympathetic or Sympathetic System Activation?
Parasympathetic
Conversion of Glycogen to Glucose
Is this caused by Parasympathetic or Sympathetic System Activation?
Sympathetic
Study Tip:
Creates glucose to use for energy.
Constricts bronchi
Is this caused by Parasympathetic or Sympathetic System Activation?
Parasympathetic
Study tip: this can cause problems for asthmatics
Stimulates peristalsis and secretion
Is this caused by Parasympathetic or Sympathetic System Activation?
Parasympathetic
Study Tip: let’s your body digest again.
Secretion of adrenaline and norepinephrine
Is this caused by Parasympathetic or Sympathetic System Activation?
Sympathetic
Study Tip: used for energy
Stimulates release of bile
Is this caused by Parasympathetic or Sympathetic System Activation?
Parasympathetic
Inhibits bladder contraction
Is this caused by Parasympathetic or Sympathetic System Activation?
Sympathetic
Study Tip: happens so the person won’t have to stop to potty in a dangerous situation.
This medication can cause steroid induced psychosis?
Glucocorticoids
Study Tip: not to be confused with anabolic steroids that the body builders use
Inhibits flow of saliva
Is this caused by Parasympathetic or Sympathetic System Activation?
Sympathetic
This type of medication interacts with receptors to cause the same activity that natural chemicals would cause at the site.
Agonist
Study Tip: activates normal body reaction to stimulus. Occupies and activates receptor sites. Makes things GO!!
Agonist VS. Antagonist
Agonist =
Antagonist =
Agonist + Antagonist =
GO!!!
STOP!! puts on the brakes
Only partially activates the receptor site.
This type of medication blocks the receptor sites stimulation by natural chemicals.
Antagonist
Study Tip: blocks normal body reaction to stimulus. Occupies receptor sites but does not activate them. Makes things STOP!!!
This medication causes the body to activate the parasympathetic nervous system so you can see (eyes constricting), you can spit (increased salivation), you can pee (increased urination), and you can shit (increased defection).
Cholinergic or anti-cholinergic medications?
Cholinergic
Study Tip: cholinergic agonist have similar effects and reactions as acetylcholine
Sympathetic AdrenergicAgonists have what effect?
Natural Sympathetic Nervous System Effects
Andrenergic Agonists medications can be?
Alpha 1, Beta 1, beta 2, Alpha specific, Beta specific (both beta 1 and beta 2)
Sympathomimetic Adrenergic Agonists have what effect?
Mimics SNS effects
Sympathomimetic Adrenergic Agonists mimic what effects of the Sympathetic Nervous System?
Vascular Support and pupil dilation
Study Tip: pupil dilation occurs with eye drops and oral meds ex?
Vascular support occurs with treatment of shock
This medication causes the body to lean to the sympathetic side so you can’t spit (reduced salivation), you can’t pee (retention of urine), you can’t shit (retention of defecation), and you can’t see (eyes dilating to see better).
Cholinergic or anti cholinergic medications?
Anti-Cholinergic
What happens when the Alpha 1 receptor is activated?
Increased myocardial contractility
Study Tip: stimulated when going into shock. Alpha 1 activation I causes blood vessels to vasoconstrict to increases blood pressure which increases cardiac Contractility due to increased workload.
Sympatholytics Adrenergic Antagonists have what effect?
Blocks Sympathetic Andrenergic Nervous System Effects
What happens when the Alpha 2 receptor is activated?
Decreased blood pressure
Decreased diarrhea
Study Tip:
Decreased BP reduces the amount of norepinephrine that is released by causing
Vasodilation of the blood vessels decreasing cardiac workload.
Decreased GI tone and motility cause release of defecation.