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КРОК / KROK
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A group of researchers aimed to study cardiac physiology found that overstretching of atria in the heart leads to decreased sodium reabsorption in the distal convoluted tubule and increase in glomerular filtration rate. Which of the following is the most likely cause of physiologic effects discovered by researchers?
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Two weeks ago, an illness was reported in several children at the orphanage. Based on the description of its clinical manifestations and epidemiological data, the epidemiologist suspects an outbreak of measles infection. What type of laboratory analysis can confirm this provisional diagnosis?
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Infectious diseases are treated with antibiotics (streptomycin, erythromycin, chloramphenicol). They inhibit the following stage of protein synthesis:
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Які механізми регуляції зумовлюють збільшення частоти серцевих скорочень під час зміни положення тіла з горизонтального у вертикалене?
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After a cholecystectomy, the processes of Ca$^{++$ absorption through the intestinal wall became impaired in the patient. What vitamin must be prescribed to stimulate this process?
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A patient complains of acute pain attacks in the right lumbar region. During examination the nephrolithic obturation of the right ureter in the region between its abdominal and pelvic segments has been detected. What anatomical boundary exists between those two segments?
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За умов дії якого ферменту арахідонова кислота (джерело синтезу ейкозаноїдів) вивільняється з фосфоліпідного бішару клітинних мембран?
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A man died after a surgery for the perforation of the colon wall with signs of diffuse purulent peritonitis. Autopsy shows that the mucosa of the colon wall is thickened, covered in a fibrinous membrane, and has isolated ulcers that penetrate it to varying depths. Histology detects mucosal necrosis, the presence of fibrin, and leukocyte infiltration with hemorrhagic foci. What disease developed a complication in this case, causing the death of this man?
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A 65-year-old woman presents to the emergency department because of shortness of breath and chest pain that started a few hours ago. She did not have a fever, expectoration, or any accompanying symptoms. She has a history of right leg deep vein thrombosis that occurred 5 years ago. Some time later, she dies of severe respiratory distress. A pulmonary autopsy specimen reveals red loose mass that is lodged in the bifurcation of the pulmonary trunk with extensions into both the left and right main pulmonary arteries. Which of the following is the most likely diagnosis?
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A newborn delivered at 33 weeks of gestation has a respiratory rate of 70/min. and heart rate of 148/min. 2 hours after birth. He is grunting and has intercostal and subcostal retractions. He has peripheral cyanosis as well. An immediate chest radiograph is taken which shows a fine reticular granulation with ground glass opacity on both lungs. A neonatologist suggests respiratory distress syndrome due to surfactant deficiency. Which of the following is the most likely mechanism of these clinical and imaging findings?
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