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KROK (Medicine) questions: Physiology

395 questions in Physiology. Open a question to see the answer options and a hint.

  1. The temperature of the ambient environment is 38o C and relative air humidity is 50%. What ways of heat emission provide maintaining a constant temperature of the human… KROK 1 2009 – Question 22
  2. The minute blood volume in a patient with transplanted heart has increased as a result of physical activity. What regulative mechanism is responsible for these changes? KROK 1 2009 – Question 24
  3. A man has normal sensitivity of his finger skin, however he doesn’t sense his wedding ring around the finger. What process induced by wearing of the ring has caused… KROK 1 2009 – Question 26
  4. ECG study showed that the T-waves were positive in the standard extremity leads, their amplitude and duration were normal. The right conclusion would be that the… KROK 1 2009 – Question 28
  5. A patient has a transversal laceration in the spinal cord. What respiratory changes will result from this? KROK 1 2009 – Question 34
  6. In a healthy adult speed of the excitement conduction through the atrioventricular node is 0.02-0.05 m/sec. Atrioventricular delay enables: KROK 1 2009 – Question 69
  7. Stimulation of an excitable cell by the electric current has led to the depolarization of its membrane. The depolarization has been caused mainly by the following ions… KROK 1 2009 – Question 71
  8. Lung ventilation in a person is increased as a result of physical activity. Which of the following indices of the external respiration is much higher than in a state of… KROK 1 2009 – Question 79
  9. As a result of continuous starvation the glomerular filtration rate has increased by 20%. The most probable cause of the glomerular filtration alteration under the… KROK 1 2009 – Question 80
  10. A man who is riding the carousel presents with increased heart rate, sweating, nausea. This condition is caused primarily by the stimulation of the following receptors: KROK 1 2009 – Question 82
  11. Cooling of the human body in water is much more faster than in the air. What way of heat emission in water is much more effective? KROK 1 2009 – Question 94
  12. After a surgery a 36-year-old woman was given an intravenous injection of concentrated albumin solution. This has induced intensified water movement in the following… KROK 1 2009 – Question 96
  13. Examination of a patient suffering from chronic hepatitis revealed a significant decrease in the synthesis and secretion of bile acids. What process will be mainly… KROK 1 2009 – Question 100
  14. While determining power inputs of a patient’s organism it was established that the respiratory coefficient equaled 1.0. This means that in the cells of the patient the… KROK 1 2009 – Question 103
  15. During an experiment the dorsal roots of the spinal cord of an animal have been cut. What changes will be observed in the innervation zone? KROK 1 2009 – Question 104
  16. An experimental animal has lost orientative reflexes as a result of destruction of certain brainstem structures. What structures had been destroyed? KROK 1 2009 – Question 105
  17. A patient has osmotic pressure of blood plasma at the rate of 350 mOsmol/l (norm is 300 mOsmol/l). This will cause hypersecretion of the following hormone: KROK 1 2009 – Question 106
  18. A 32-year-old patient consulted a doctor about the absence of lactation after parturition. Such disorder might be explained by the deficit of the following hormone: KROK 1 2009 – Question 130
  19. During an experiment the myotatic reflex has been studied in frogs. After extension in a skeletal muscle its reflectory contraction was absent. The reason for it might… KROK 1 2009 – Question 150
  20. During an experiment vagus branches that innervate heart are being stimulated. This has stopped conduction of excitement from the atria to the ventricles. The reason… KROK 1 2009 – Question 151
  21. In response to a change in body position from horizontal to vertical blood circulation system develops reflectory pressor reaction. Which of the following is its… KROK 1 2009 – Question 154
  22. A man presents with increased heart rate, mydriatic pupils, dry mouth. This condition results from the activation of the following system of function regulation: KROK 1 2009 – Question 166
  23. An animal has an increased tonus of extensor muscles. This the result of intensified information transmission to the motoneurons of the spinal cord through the… KROK 1 2009 – Question 174
  24. Vagus nerves of an experimental animal have been cut on the both sides. What respiratory changes will result from this? KROK 1 2009 – Question 179
  25. Which muscle contraction will be observed in the upper extremity during holding (not moving) a load in a certain position? KROK 1 2009 – Question 184
  26. A 60-year-old patient presents with weakened peristaltic activity of the bowels. Which of the following foodstuffs would stimulate peristalsis most of all? KROK 1 2009 – Question 190
  27. It was established that agglutination of the recipient’s blood erythrocytes had been caused by the standard sera from the I and II groups. Serum from the III group as… KROK 1 2009 – Question 193
  28. A 60 year old patient has impaired perception of high-frequency sounds. These changes were caused by damage of the following auditory analyzer structures: KROK 1 2010 – Question 10
  29. Students who are taking examinations often have dry mouth. The mechanism that causes this state is the realization of the following reflexes: KROK 1 2010 – Question 16
  30. During an experiment a skeletal muscle is stimulated by a series of electric impulses. What type of muscle contraction will be observed provided that each subsequent… KROK 1 2010 – Question 21
  31. ECG of a patient shows prolongation of T-wave. This is caused by deceleration in ventricles of: KROK 1 2010 – Question 33
  32. During preparation of a patient to a heart surgery it was necessary to measure pressure in heart chambers. In one of them pressure varied from 0 mm Hg up to 120 mm Hg… KROK 1 2010 – Question 44
  33. Atria of an experimental animal were superdistended by blood that resulted in decreased reabsorption of Na+ and water in renal tubules. This can be explained by the… KROK 1 2010 – Question 58
  34. A concentrated solution of sodium chloride was intravenously injected to an animal. This caused decreased reabsorption of sodium ions in the renal tubules. It is the… KROK 1 2010 – Question 72
  35. People adapted to high external temperatures have such peculiarity: profuse sweating isn’t accompanied by loss of large volumes of sodium chloride. This is caused by… KROK 1 2010 – Question 73
  36. A patient is 44 years old. Laboratory examination of his blood revealed that content of proteins in plasma was 40 g/l. What influence will be exerted on the… KROK 1 2010 – Question 89
  37. After destruction of CNS structures an animal lost orientative reflexes. What structure was destroyed? KROK 1 2010 – Question 90
  38. An isolated cell of human heart automatically generates excitement impulses with frequency of 60 times per minute. This cell was taken from the following heart structure: KROK 1 2010 – Question 91
  39. A patient staggers and walks astraddle. He has hypomyotonia of arm and leg muscles, staccato speech. In what brain section is this affection localized? KROK 1 2010 – Question 108
  40. Blood group of a 30 year old man was specified before an operation. His blood is Rh-positive. Reaction of erythrocyte agglutination was absent with standard sera of 0αβ… KROK 1 2010 – Question 111
  41. A man weighs 80 kg, after long physical activity his circulating blood volume is reduced down to 5,4 l, hematocrit makes up 50%, whole blood protein is 80 g/l. These… KROK 1 2010 – Question 125
  42. Examination of a pregnant woman revealed twice as much concentration of fibrinogen in blood plasm. What ESR can this woman have? KROK 1 2010 – Question 126
  43. Introduction of a big dose of histamine to an experimental animal caused abrupt drop of arterial pressure as a result of: KROK 1 2010 – Question 128
  44. Vagus branches that innervate heart are being stimulated during an experiment. This caused reduction of heart rate due to the intensification of the following process… KROK 1 2010 – Question 130
  45. Voluntary breath-holding caused increase of respiration depth and frequency. The main factor stimulating these changes of external respiration is: KROK 1 2010 – Question 149
  46. A patient has delayed conduction of excitement through the atrioventricular node. What changes of ECG will be observed? KROK 1 2010 – Question 151
  47. Surface with an intact toad on it was inclined to the right. Tone of extensor muscles became reflectory higher due to the activation of the following receptors: KROK 1 2010 – Question 152
  48. Lungs of a preterm infant have areas of atelectasis (pulmonary collapse). The main cause is: KROK 1 2010 – Question 165
  49. A young woman who entered a production department where it strongly smelt of paints and varnishes had a bronchospasm. This reflex was caused by irritation of the… KROK 1 2010 – Question 184
  50. An isolated muscle fiber is under examination. It was established that the threshold of stimulation force became significantly lower. What is the cause of this… KROK 1 2010 – Question 190

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