Midterm 1 Flashcards
Which of the following is not a monoamine
Serotonin
Dopamine
Histamine
Acetylcholine
Acetylcholine
List of monoamines
Serotonin
Dopamine
Histamine
Catecholamines: Epi, Norepi, Dopamine
Effect of Dopamine beta hydroxylase insufficiency
Severe orthostatic hypotension
Need it to make Epi and Norepi
Side effects of monoamine oxidase inhibitor
Orthostatic hypotension
Weight gain
Autonomic activity altered
(dopamine beta hydroxylase insufficiency?)
Function of tryptophan hydroxylase
tryptophan to 5HTP
Pheochromocytoma
Tumor of adrenal gland, medulla
Hypertension
Treatment of pheochromocytoma causes hypotension
Propranolol administration
what is it
effects
Non selective beta antagonist
decreased HR and contractility
Increase TPR (baroreceptor?)
Inhibits renin
What is responsible for the degradation of dopamine
Monoamine oxidase
degrades serotonin, epi, norepi, and histamine - NOT ACh
Function of tyrosine hydroxylase
tyrosine to DOPA
A farm worker is poisoned by a pesticide, presents in emergency room with blurred vision, excess salivation, twitching, and decreased heart rate.
What was the poison
Treat with what category and examples
Muscarinic agonist
Treat with Muscarinic antagonist: Atropine, scopolamine
Nicotinic antagonists
Succinylcholine - depolarizer/desensitizer, not blocked by acetylcholinesterase inhibitor
d-Tubocurarine - competes with ACh, reversed by acetylcholinesterase inhibitor
No transmitter pathways from week one
pathways
Preganglionic sympathetic neurons are where
Thoracolumbar
Sympathetic preganglionic neurons act upon what receptors where
nicotinic receptors in adrenal medulla
All preganglionics act on what receptors with what neurotransmitter
nicotinic receptors, ACh
Motor neurons innervating skeletal muscle act via what receptors
Nicotinic
Ach
Postganglionic sympathetic neurons can release what transmitters
Dopamine (D1) - Renal vascular smooth muscle
ACh - (M) Sweat glands
NE (alpha and beta) - cardiac and smooth muscle, glands nerve terminals
All parasympathetic post ganglionic neurons release what on what receptor
ACh
Muscarinic
Adrenergic receptors
Receptors that take catecholamines
NE, Epi, Dopamine
Bethanechol administration causes
increased gastric acid secretion
Cholinomimetic
acts on muscarinic receptor
Rest and digest effects
Other than rest and digest, muscarinic receptors can activate what
Sympathetic sweat glands
What causes increased heart rate
Beta 1 agonists
isoproterenol
Epi or NE
What causes urinary retention
Alpha 1 agonists contracts sphincters - phenylephrine, Phentolamine (non selective)
Beta 2 agonists relaxes bladder wall - Isoproterenol, Albuterol, Terbutaline
Dry mouth from
Anti-cholinergics/Muscarinic antagonist
Atropine
Scopolamine
The cardiovascular effects of epinephrine in a person treated with propranolol and prazosin will most likely resemble the response of what drug
Pilocarpine
Phenylephrine
Clonidine
Isoproterenol
Propranolol - Beta 1 and 2 blocker
Prazosine - Alpha 1 antagonist
Answer: Clonidine
Clonidine
Alpha 2 agonist
Decreases B.P. by shutting down NE release in brainstem (auto-receptor)
Can constrict vasculature
other alpha 2: guanfacine
Pilocarpine
Cholinesterase inhibitor
Cholinomimetic
Muscarinic receptor agonist
Rest and digest effects
Phenylephrine
what
uses/effects
Alpha 1 agonist vasoconstriction Nasal decongestant Cause mydriasis for eye exams Radial muscle contraction
Isoproterenol
what
uses/effects
Beta (non selective) AGONIST
treat asthma - airway relaxation
treat bronchospasms, COPD
Relaxes uterus
Which is most likely used to treat chronic asthma
epinephrine
albuterol
phentolamine
atenolol
Albuterol
Albuterol
Beta 2 agonist
The relaxer: ciliary muscle (far vision), vasculature in muscle, uterus and bladder
Epinephrine effects
Constricts radial muscle - mydriasis constricts sphincters constricts vasculature can relax airways increase outflow of aqueous humor relax bladder - B2
phentolamine
alpha antagonist (non selective)
vasodilator
increased HR - baroreceptors
Treats pheochromocytoma/hypertensive emergencies
atenolol
B1 blocker
Turns the heart down
Which of the following would be the most effective decongestant
alpha-1 agonist
alpha-1 antagonist
beta-1 agonist
muscarinic agonist
alpha - 1 agonist - vasoconstrictors
muscarinic - increase secretions - not good
Which of the following are most likely to be used by an ophthalmologist for a retinal exam
beta-1 agonist or a muscarinic antagonist
alpha-1 antagonist or a muscarinic agonist
alpha-1 agonist or a muscarinic agonist
alpha-1 agonist or a muscarinic antagonist
alpha-1 agonist or a muscarinic antagonist
alpha 1 agonist - radial muscle
muscarinic antagonist - opens circular muscle
Which antiseizure drug is FDA-approved as a monotherapy for generalized tonic-clonic seizures but also has indications for uncomplicated absence seizures, atypical absence seizures, simple and complex partial seizures
Ethosuximide
Perampanel
Carbamazepine
Valproic acid
Valproic acid
Ethosuximide
treats absence only - a generalized seizure
Carbamazepine
treats all partial seizures (simple complex, secondarily generalized) and Tonic-clonic generalized
Valproic acid
broad spectrum, all seizures
This type of seizure is characterized by a localized focus, minimal spread, short duration and maintenance of awareness, consciousness, and memory of seizure event
complex partial
Generalized Absence
Generalized tonic-clonic
Simple partial
Simple partial
Complex partial seizure
localized onset, can spread bilaterally
loss of awareness, memory, or conciousness
Generalized tonic-clonic
tonic - stiff
clonic - jerking
Postictal - lethargy after
Generalized absence seizure
vacant stare
good before and after
spike wave
Simple partial
retain awareness, consciousness, and memory
Common seizure precipitants
Sedative or ethanol withdrawal Metabolic and/or electrolyte imbalance Lack of sleep Concussion and/or head injury Reduction of medication Hormone variation stress Fever/systemic infection Stimulant
Carbamazepine
uses
side effects
all partial
tonic-clonic generalized
Steven-Johnson syndrome
blurred/double vision
CYP3A4
Grapefruit increases drug amount
Phenytoin
uses
side effects
all partial
tonic-clonic generalized
Gingival hyperplasia
zero-order kinetics at higher doses
Ethosuximide
uses
side effects
absence only
anorexia
blood dyscrasia
SLE-like reaction
Which of the following processes is least likely to cause a degenerative CNS disorder
enhanced GABA receptor activity
Enhanced NMDA receptor activity
Abnormal intracellular protein aggregation
Excessive calcium influxes into the neuron
Enhanced GABA receptor activity
inhibitory
Processes that cause degenerative CNS disorder
Enhanced NMDA receptor activity - glutamate , excitatory Abnormal intracellular protein aggregation Excessive calcium influxes into neuron Hypoxia Ree radicals Immune response Infections Apoptosis
Which of the following drugs is least likely to be prescribed to treat the symptoms associated with parkinson’s disease
L-dopa + carbidopa
Selegiline
Haloperidol
Pramipexole
Haloperidol - Butyrophenone, treats schizophrenia
L-dopa and carbidopa
L-dopa crosses BBB
Carbidopa blocks metabolism
Treats Parkinson’s
Selegiline
blocks MAO from breaking down dopamine
Treats Parkinson’s