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127 Cards in this Set
- Front
- Back
hexamethonium effects
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dominant sympathetic tone in arteries/vessels, as such blocked sympathetic tone will dilate vessels
decreased HR, CO, urine output, GI motility, pupil of the eye(will dilate) |
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Nicotinic Receptors are...
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Sodium/K+ channels
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How does choline enter cell?
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Sodium cotransporter(rate limiting step)
Same way Tyrosine enters cell |
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Vesamicol MOA
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blocks ChAT
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Hemicholinium MOA
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Blocks entry of Choline into neuron
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Black Widow Spider Toxin
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floods synapse with ACh
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Tyrosine Hydroxylase catalyzes what reaction? What inhibits this?
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Tyrosine --> DOPA
Metyrosine |
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Review pathway of Epinephrine synthesis
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Phenylalanine --> Tyrosine --> L-DOPA --> Dopamine --> Norepinephrine --> Epinephrine
Tyrosine --> Thyroxine L-DOPA --> melanin |
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______ --> Tyrosine?
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Phenylalanine
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______ --> L-DOPA
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Tyrosine
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______ --> Norepinephrine
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Dopamine
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_____ --> Melanin
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L-DOPA
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_______ --> Thyroxine
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Tyrosine
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L-DOPA --> _______
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Melanin OR Dopamine
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Tyrosine ---> ______
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Thyroxine OR L-DOPA
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Reserpine MOA
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Blocks packaging of Dopamine into vesicles
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Reuptake Inhibitors of NE
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TCA's, cocaine, Amphetamines
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Blocks release of NE
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Bretyllium, Guanethidine
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Stimulates release of NE
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Ephedrine, Amphetamine, Tyramine
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These receptors inhibit NE release. What receptor stimulates secretion?
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alpha 2, Muscarinic 2
Angiotensin II receptor |
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What substance do you not take when you're taking MAOI's?
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Tyramine(dietary) will stimulate release of NE. MAO is also in gut, which normally breaks down Tyramine. But due to MAOI, it is NOT broken down and causes hypertensive crisis.
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Byproducts of breakdown of NE
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VMA, Metanephrines, Normetanephrines
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beta 2 stimulation
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vasodilation and bronchodilation, also heart rate increase, increased contractility
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M2 stimulation
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decreases heart rate and contractility
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alpha 1 stimulation
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vascular smooth muscle contraction
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Gq
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Phospholipase C -->
IP3 increases Ca+ DAG activates Protein Kinase C |
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M1 stimulation
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CNS, enteric nervous system
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M3 stimulation
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increase exocrine gland secretions, increase gut peristalsis, increase bladder contraction/bronchoconstriction
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D1 stimulation
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relaxes renal vascular smooth muscle
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D2 stimulation
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brain
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H1 receptor
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nasal/bronchial secretions, pruritis(allergies)
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H2 receptor
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Gastric acid secretion
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V1 stimulation
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vascular smooth muscle contraction
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V2 stimulation
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increase H2O permeability in kidney
V2 is found in 2 kidneys |
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Phase I metabolism
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more polar
reduction, oxidation, hydrolysis |
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Phase II metabolism
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very polar, inactive metabolites, renally excreted
acetylation, glucuronidation, sulfation |
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Pyridostigmine
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get RID of MG
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Edrophonium
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Diagnose MG(Tinsillin Test)
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Physostigmine
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fixes atropine overdose, glaucoma
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Echothiophate
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glaucoma
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Alzheimer's Drugs
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Donepezil, Rivastigmine, Galantamine
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Organophosphates MOA
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ACh Esterase inhibitor
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Drug for anaphylactic shock
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Epinephrine
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Drug for septic shock
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Norepinephrine
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Dopamine uses
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increases renal perfusion, heart failure
D1 = D2 > Beta > alpha |
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Drug for cardiogenic shock
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Dobutamine
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Cardiac stress testing drug of choice
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Dobutamine
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Phenylephrine effects
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pupillary dilation, vasoconstriction, nasal decongestion
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Acute Asthma. Long term treatment?
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Metaproterenol, Albuterol
Long term - Salmeterol |
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Premature Uterine Contractions
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Terbutaline, Ritodrine
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Uptake inhibitors
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Cocaine, TCA, Amphetamine
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Stimulates release of NE
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Ephedrine, Amphetamines, Tyramine
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Heart rate response to NE?
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reflex bradycardia
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Heart rate response to Isoproterenol?
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Reflex tachycardia
beta 1 -- increases heart rate beta 2 -- vasodilates |
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alpha 2 agonists
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clonidine, alpha methyldopa
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What side effect does Clonidine have?
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rebound hypertension if a dose is missed...
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What is a notable use of alpha methyldopa?
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maintain BP in pregnancy
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Notable about levalbuterol?
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Does NOT have beta 1 effects, so can give to people with heart failure
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beta blockers that treat MI?
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Metoprolol, Carvedilol
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glaucoma beta blocker
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timolol
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Cocaine overdose. Response to beta blockers?
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BAD, will cause hypertensive crisis.
Cocaine causes noradrenergic stimulation of all alpha AND beta. Beta 2 vasodilation mediates the crisis. But with beta blockers will then cause unopposed alpha stimulation. |
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Open angle glaucoma(wide angle)
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obstructed OUTFLOW(canal of Schlemm)
common, insidious, loss of peripheral vision |
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Closed angle glaucoma(narrow angle)
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abrupt, painful, lens sticks to iris. pupil NOT reactive to light
EMERGENCY |
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What is contraindicated in closed angle glaucoma?
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Atropine/Epinephrine/Mydriasis causing drugs.
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60 yr old man, halos, worsening vision, night driving
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cataracts
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Glaucoma Drugs
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alpha agonist(Epinephrine, Brimonidine) -- NOT IN CLOSED ANGLE
beta blockers cholinomimetics diurectics prostoglandins |
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Acetazolamide
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Diuretic, Glaucoma
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Mannitol
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Diuretic, Glaucoma
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Increases outflow of aqueous humor
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Cholinomimetics, Prostaglandin
Pilocarpine, Carbachol, Physostigmine, Echothiophate, Latanoprost |
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Phenoxybenzamine
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Irreversible non selective alpha blocker
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Phentolamine
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reversible non selective alpha blocker
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urinary retention/BPH
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alpha 1 blockers -- -zosin's
also treats HTN |
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1st dose orthostatic Hypotension
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alpha 1 blockers -- -zosin's
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alpha 1 antagonist that does not have a -zosin ending
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Tamsulosin -- used for BPH. Selective for smooth muscle receptors on prostate and does not vasodilate
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sedation and increases appetite
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Mirtazapine(alpha 2 blocker)
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medial epicondyle fracture
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ulnar n
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hook of hamate fracture
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ulnar n
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dislocated lunate
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median n
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carpal tunnel
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median n
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midshaft fracture of humerus
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radial n in spiral groove
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Klumpke's Palsy
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--Thenar/Hypothenar atrophy
--Interosseus Muscles Atrophy --Sensory Deficits on the medial side of the forearm and hand --Disappearance of pulse upon moving head towards ipsilateral side |
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fracture of surgical neck
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axillary n
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dislocation of the humerus
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axillary n
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intramuscular injections on arm
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axillary n
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Subluxation of radius
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deep branch of radial n
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superficial laceration of thenar region
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recurrent branch of median n
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trauma to heel of hand
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ulnar n
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repeated minor trauma to elbow region
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ulnar n
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compressed in deep forearm
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ant. interosseus n(branch of median n)
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supracondylar fracture of humerus
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median n
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pronator teres syndrome
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median n
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compressed in axilla by incorrect crutch usage
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radial n
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pancoast tumor of lung
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klumpke's palsy
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cervical disk lesion
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c7
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lateral epicondylitis
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tennis
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medial epicondylitis
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golf
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hangs by side, medial rotation, forearm pronated
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Erb Duchenne
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Axillary Nerve Roots
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C5, C6
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Radial Nerve roots
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C5-C8
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Median Nerve roots
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C6-C8, T1
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Ulnar Nerve roots
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C8,T1
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Musculocutaneous nerve roots
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C5-C7
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Saturday night palsy
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Radial nerve
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wrist drop
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radial nerve
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flattened deltoid
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axillary nerve
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ulnar deviation of wrist upon wrist flexion
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median nerve
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radial deviation of wrist upon wrist flexion
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ulnar nerve
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ape hand
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thenar atrophy, loss of opposability of thumb
median nerve |
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interosseus innervation
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ulnar(abduct and adduct fingers)
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extension of 4th/5th fingers
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ulnar nerve(lumbricals)
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opposition of thumb
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median n
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adduction of thumb
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ulnar nerve
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lateral forearm sensory
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Musculocutaneous nerve
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posterior arm sensory
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radial nerve
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total claw hand needs lesion where?
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C8, T1
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pronation of forearm
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median nerve
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supination of forearm
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musculocutaneous(biceps) and radial nerve(supinator)
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arm abduction
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axillary nerve
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suprascapular nerve innervates
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infraspinatus muscle which is a lateral rotator
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forearm extension
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triceps, radial nerve
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initial ten degrees of arm abduction
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suprascapular nerve innervating supraspinatus muscle
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after initial ten degrees of arm abduction
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deltoid via axillary nerve
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raising arm above horizontal
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serratus anterior(Long thoracic) and trapezius(Spinal Accesory Nerve)
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Posterior Circumflex artery
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-- Axillary Nerve
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Deep brachial artery
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-- Radial Nerve
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Brachial Artery
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-- Median Nerve
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Posterior Interosseus Artery
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-- Deep branch of radian nerve
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