KROK (Medicine) questions: Histology, Cytology, and Embryology — page 2

171 questions in Histology, Cytology, and Embryology. Open a question to see the answer options and a hint.

51. Students study the stages of gametogenesis. They analyze a cell having a haploid number of chromosomes, and each chromosome consists of two chromatids. The chromosomes… KROK 1 2013 – Question 167
52. A specimen of an onion rootlet includes a cell in which the fully condensed chromosomes are located in the equatorial plane making the monaster. What phase of the… KROK 1 2013 – Question 170
53. Human skin has a high breaking strength. It is known that the skin consists of epithelial tissue and two kinds of connective tissue. Which of the following tissues… KROK 1 2013 – Question 187
54. A 22-year-old female student consulted a physician about fever up to 38°C, weakness, sore throat. Objectively: there is white coating of the tongue. What histological… KROK 1 2014 – Question 61
55. A microslide contains the preparation of a gland composed of several secretory saccule-shaped parts that open in the common excretory duct. What gland is it? KROK 1 2014 – Question 87
56. An electron micrograph shows a cell-to-cell adhesion consisting, in each cell, of an attachment plaque. The intercellular space is filled with electron-dense substance… KROK 1 2014 – Question 121
57. During the histological study of cortical shaft, basophilic cells with developed synthesis organelles can be seen on the bone surface under the layer of fibers. These… KROK 1 2014 – Question 138
58. There are cortical and medullary substances separated by connective tissue layer in the endocrine gland specimen. Parenchyma cells make up three zones in cortical… KROK 1 2014 – Question 172
59. Histological specimen of a 10-day human embryo represents 2 contacting sacs (amniotic and yolk sacs). Specify the structure that separates the amniotic cavity from the… KROK 1 2014 – Question 173
60. An electron micrograph shows a cell of neural origin. The terminal portion of the cell dendrite has cylindrical shape and consists of 1000 closed membrane disks. What… KROK 1 2014 – Question 174
61. A histologic specimen represents an organ with walls comprised of mucous, submucous, fibrous-cartilaginous and adventitial membranes. Epithelium is multirowed and… KROK 1 2014 – Question 194
62. Histologic specimen of a kidney demonstrates cells closely adjoined to the renal corpuscle in the distal convoluted tubule. Their basement membrane is extremely thin… KROK 1 2015 – Question 2
63. During postembryonal haemopoiesis in red bone marrow the cells of one of the cellular differons demonstrate gradual decrease in cytoplasmic basophilia as well as… KROK 1 2015 – Question 7
64. A microspecimen of heart shows rectangular cells from 50 to 120 micrometers large with central position of nucleus and developed myofibrils. The cells are connected by… KROK 1 2015 – Question 10
65. Atretic bodies and developed yellow body can be observed along with follicles of various orders in an ovary specimen. What stage of ovarian and menstrual cycle is… KROK 1 2015 – Question 17
66. A 12-year-old patient has white nonpigmented spots on the skin. The spots appeared after the patient became 10 years old, and they constantly grow. This spots appeared… KROK 1 2015 – Question 21
67. Work in a mine is known to cause inhalation of large amounts of coal dust. Inhaled coal dust can be detected in the following pulmonary cells: KROK 1 2015 – Question 38
68. Cells of healthy liver actively synthesize glycogen and proteins. What organelles are the most developed in them? KROK 1 2015 – Question 42
69. Alveolar space of acinus was invaded by bacteria that interacted with the surfactant. This led to the activation of the cells that are localized in the alveolar walls… KROK 1 2015 – Question 84
70. A doctor examined a patient, studied the blood analyses, and reached a conclusion, that peripheral immunogenesis organs are affected. What organs are the most likely to… KROK 1 2015 – Question 90
71. A specimen of a parenchymal organ shows poorly delineated hexagonal lobules surrounding a central vein, and the interlobular connective tissue contains embedded triads… KROK 1 2015 – Question 98
72. As a result of a mechanical injury an over 10 cm long portion of a peripheral nerve was damaged. This caused an impairment of the upper limb activity. The patient was… KROK 1 2015 – Question 128
73. A microslide presents a tissue with spherical cells, each of them containing a large fat drop covered with thin cytoplasm layer in its center. Nucleus is compressed and… KROK 1 2015 – Question 179
74. Histologic specimen of a kidney demonstrates cells closely adjoined to the renal corpuscle in the distal convoluted tubule. Their basement membrane is extremely thin… KROK 1 2016 – Question 3
75. An infant has been diagnosed with microcephaly. Doctors suspect that this brain disorder developed due to the fact that the mother had been taking actinomycin D during… KROK 1 2016 – Question 18
76. Work in a mine is known to cause inhalation of large amounts of coal dust. Inhaled coal dust can be detected in the following pulmonary cells: KROK 1 2016 – Question 50
77. Cells of a healthy liver actively synthesize glycogen and proteins. What organelles are the most developed in them? KROK 1 2016 – Question 53
78. Histologic preparation stained with orcein demonstrates from 40 to 60 fenestrated elastic membranes within the middle coat of vessel. Name this vessel: KROK 1 2016 – Question 71
79. A specimen shows an organ covered with the connective tissue capsule with radiating trabeculae. There is also cortex containing lymph nodules, and medullary cords made… KROK 1 2016 – Question 82
80. At a certain stage of cell cycle chromosomes reach cellular poles, undergo despiralization; nuclear membranes are being formed around them; nucleolus is restored. What… KROK 1 2016 – Question 94
81. Histological specimen of a hemopoietic organ shows clusters of node- and band-shaped lymphocytes that along with stroma elements compose cortical and medullar… KROK 1 2016 – Question 99
82. A microslide contains the specimen of a gland composed of several secretory saccule-shaped parts that open in the common excretory duct. What gland is it? KROK 1 2016 – Question 108
83. Histological specimen of an ovary demonstrates a spherical structure composed of large glandular cells containing lutein. What hormone is produced by the cells of this… KROK 1 2016 – Question 111
84. A specimen of a parenchymal organ shows poorly delineated hexagonal lobules surrounding a central vein, and the interlobular connective tissue contains embedded triads… KROK 1 2016 – Question 120
85. Parenchyma of an organ is composed of pseudounipolar neurons localized under the capsule of connective tissue. Central place belongs to nerve fibers. Name this organ: KROK 1 2016 – Question 153
86. A microslide demonstrates an organ with its wall consisting of three membranes. The inner membrane has tubular glands and undergoes cyclic changes. Name this organ: KROK 1 2016 – Question 192
87. In the life cycle of a cell during mitosis a natural change in the amount of genetic material occurs. The DNA doubles at the following stage: KROK 1 2017 – Question 2
88. Histological specimen of the ovary shows large hollow structures. Primary oocyte within these structures is surrounded with transparent membrane and radiating crown and… KROK 1 2017 – Question 44
89. Histological specimen demonstrates a parenchymal organ with cortical and medullary substances. The cortical substance is composed of bands of epithelial cells with… KROK 1 2017 – Question 45
90. Histological specimen shows organ parenchyma to consist of lymphoid tissue that forms lymph nodules; the nodules are located diffusely and have a central artery. What… KROK 1 2017 – Question 54
91. A young man came to a hospital with complaints of disturbed urination. Examination of his external genitalia revealed the urethra to be split on the top, with urine… KROK 1 2017 – Question 79
92. Histologic preparation stained with orcein demonstrates from 40 to 60 fenestrated elastic membranes within the middle coat of the vessel. Name this vessel: KROK 1 2017 – Question 84
93. A specimen shows an organ covered with connective tissue capsule with trabeculae radiating inward the organ. The organ’s cortex contains lymph nodules; there are… KROK 1 2017 – Question 95
94. Electron micrograph of the kidney shows fenestrated endothelium lying on the basement membrane; the external surface of the membrane has adjacent dendritic epithelial… KROK 1 2017 – Question 99
95. A patient complaining of heartburn has undergone biopsy of the gastric mucosa. In the sample there are numerous cells with oxyphilic cytoplasm in the glandular… KROK 1 2017 – Question 132
96. A person with vitamin A deficiency develops twilight vision disturbance. Name the cells that fulfill this photoreceptor function: KROK 1 2017 – Question 142
97. Presented is the biopsy material of an organ consisting of saccule-shaped rounded structures of varying size. Inside these structures there is a gel-like non-cellular… KROK 1 2017 – Question 143
98. Ionizing radiation or vitamin E deficiency affect the cell by increasing lysosome membrane permeability. What are the possible consequences of this pathology? KROK 1 2017 – Question 154
99. A histological specimen shows significant amount of mucous connective tissue (Wharton’s jelly), vessels, as well as residual yolk and allantois. Name this organ: KROK 1 2017 – Question 169
100. An 18-year-old student presents with enlarged thyroid gland accompanied by accelerated metabolism and increased heart rate. These signs can be observed during… KROK 1 2018 – Question 10

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