agonist
Sunday, June 9, 2019
You are reviewing the data from several meta-analysis that addressed the most common causes of adverse or otherwise excessive effects of prescription drugs in young adults and in elderly (>60 yeares of age).Interactions between multiple drugs were not considered. Which variable would you find to be decreased, and be the most common general cause of these problems, in the elders
renal function/clearance
Of the following characteristics, which is unlikely to be associated with the process of facilitated diffusion of drugs
the drug crosses the membrane against a concentration gradient and the process requires cellular energy
Idiosyncratic reaction of a drug is
unpredictable, inherent, qualitatively abnormal reaction to a drug
Pick out the right statement
microsomal oxidation results in an increase of ionization and water solubility of a drug
For the calculation of the volume of distribution (Vd) one must take into account
concentration of a substance in plasma
Correct statements listing characteristics of a parenteral route of drug administration include all of the following EXCEPT
inhalation provides slow access to the general circulation
Hypoproteinemia leads to increased action of drugs, because
increases free fraction of drug that manifesting pharmacological effects
When drug administrated enteral, then its bioavailability is determined by
degree of absorption and metabolism at the first passage through the liver
The intensity of passive diffusion of drug substances through the cell membrane is determined by
transmembrane concentration gradient of substance
What is characteristic of active transport of drugs through membrane
<variant>can be against the concentration gradient
The intensity of passive diffusion of drug substances through the cell membrane is determined by
<variant>concentration gradient of substance
A hydrophilic medicinal agent has the following property
<variant>low ability to penetrate through the cell membrane lipids
The intensity of passive diffusion of drug substances through the cell membrane is determined by
<variant>degree of substance lipophilicity, concentration gradient
To calculate the volume of drug distribution need to know
<variant>the concentration of a substance in the plasma
Which of the following is typical for hydrophilic drug substances
<variant>low ability to penetrate through lipid layers of cell membranes
The cytochrome P 450 system in the liver
<variant>involves in oxidation process by microsomal enzymes
The mechanism of action by which pyrantel pamoate is effective for treatment of Necator americanus (hookworm) is
<variant>inhibition of neuromuscular transmission
Which of the following is the fungi static mechanism of action of griseofulvin
<variant>disruption of the synthesis of nucleic proteins
Chronic candidiasis infections of the GI tract and oral cavity are treated with agent in pill form
<variant>fluconazole
<variant>fluconazole
<variant>fluconazole
Ethambutol has the following unwanted effect
<variant>retrobulbar neuritis with red-green color blindness
Immunosuppressive effect of glucocorticoids is not related
<variant>violation of histamine synthesis
Tick niclosamide mechanism of action
<variant>inhibiting oxidative phosphorylation in some species of helminthes
Tick praziquantel mechanism of action
<variant>increasing cell membrane permeability for calcium, resulting in paralysis, dislodgement and death of helminthes
Tick piperazine mechanism of action
<variant>blocking acetylcholine transmission at the myoneural junction and paralysis of helminthes
Tick mebendazole mechanism of action
<variant>inhibiting microtubule synthesis in helminthes and irreversible impairment of glucose uptake
A patient will started on primaquine to treat active Plasmodium vivax malaria, specifically to target the hepatic forms of the parasite. Before you administer the drug you should screen the patient to assess their relative risk of developing a relatively common and severe response to the drug. What is that primaquine-associated risk
<variant>hemolytic disease
Primary mechanism by which norepinephrine acutely increases BP
<variant>vasoconstriction at precapillary resistance muscles and veins
Pralidoxime chloride is a drug that
<variant>reactivates cholinesterases that have been inhibited by organophosphate cholinesterase inhibitors
Thursday, June 6, 2019
List the sequence of units that constitute the reflex arc
receptor, sensitive neuron, motoneuron, working organ++
What changes occur in muscle with increasing strength of the stimulus?
force of contraction increases ++
What are the physiological properties relate to smooth muscle?
Excitability, conductivity, automaticity, contractility ++
What condition is necessary for the forming of conditioned reflexes?
conditioned stimulus precedes the unconditioned+++
What are the features of the functions of the left hemisphere of the brain?
there are more functions associated with the II signaling system++
Which fields of vision injuries in the chiasm visual pathways?
Lateral on the right and at the left++
At what conditions of an organism the positive nitrogenous balance is observed?
in growth, at pregnancy, at the moment of recover++
Than the subnormal phase of tissue excitability is characterised?
decrease of excitability, in comparison with an initial condition ++
What is the role of the Eustachian tube that connects the middle ear cavity to the nasopharynx?
provide normal barometric pressure on the middle ear++
Energy of the basal metabolism is spent for what processes?
Breath, a motility of a digestive path, body temperature maintenance, heart work++
Name the conditions necessary for determining basal metabolism
Conditions on an empty stomach, laying, temperature of 18-20 degrees++
Where are located centers of the parasympathetic nervous system?
medulla oblongata, midbrain, sacral parts of the spinal cord++
What properties are characterized by a dominant centre of excitation?
stable excitation, the ability to summation, inertia++
Wednesday, June 5, 2019
Which one of the following statements is correct
>phenobarbital induces respiratory depression, which is enhanced by the consumption of ethanol
Which of following INCORRECTLY matches a cholinergic agonist with a pharmacological action
>physostigmine;decreases intestinal motility
Nondepolarizing neuromuscular blockers are associated with all of the following EXPECT
>initial activation of Ach receptor and depolarization of the motor plate
What is the mistake in this prescription Rp.:Solutionis Atropini sulfatis 0,1% - 10 ml Da.Signa:1 tablet 2 times a day
>mistake in the recipe in instructions to the patient
Which of the following are the main purposes for adding a vasoconstrictor drug to a local anesthetic
>to increase the duration of anesthetic effect
Which of the following statements best explains why the onset of the therapeutic effect of a local anesthetic usually slower in infected tissues
<variant>they have a low extracellular pH, which hinders drug diffusion into the cell
Which of the following are the main purposes for adding a vasoconstrictor drug to a local anesthetic
>to decrease the risk of systemic overdose toxicity of the drug
Which of the following molecular events makes the nerve membrane more sensitive to the action of local anesthetics
>increased extracellular concentration of K+
Specify the reason for the low activity of local anesthetics in inflammation
>acidic environment in the inflammation and in ability to go into the base
What factor reduces the effect of procaine in the inflammation
>more acidic environment in the inflammation
Of the following characteristics, which is unlikely to be associated with the process of facilitated diffusion of drugs
>the drug crosses the membrane against a concentration gradient and the process requires cellular energy
Idiosyncratic reaction of a drug is
>unpredictable, inherent, qualitatively abnormal reaction to a drug
You are reviewing the data from several meta-analysis that addressed the most common causes of adverse or otherwise excessive effects of prescription drugs in young adults and in elderly (>60 yeares of age).Interactions between multiple drugs were not considered. Which variable would you find to be decreased, and be the most common general cause of these problems, in the elders
>renal function/clearance
When drug administrated enteral, then its bioavailability is determined by
>degree of absorption and metabolism at the first passage through the liver
Hypoproteinemia leads to increased action of drugs, because
>increases free fraction of drug that manifesting pharmacological effects
Pick out the right statement
>microsomal oxidation results in an increase of ionization and water solubility of a drug
For the calculation of the volume of distribution (Vd) one must take into account
>concentration of a substance in plasma
Correct statements listing characteristics of a parenteral route of drug administration include all of the following EXCEPT
>inhalation provides slow access to the general circulation
What is characteristic of active transport of drugs through membrane
>can be against the concentration gradient
The intensity of passive diffusion of drug substances through the cell membrane is determined by
>transmembrane concentration gradient of substance
What is the mechanism of antimicrobial action of potassium permanganate
violation of oxidation-reductive processes
Which mediators of inflammation are acted on by NSAIDs
>arachidonic acid and metabolites, such as prostaglandins, thromboxanes, and leukortrienes
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unpredictable, inherent, qualitatively abnormal reaction to a drug