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Тесты

Вопрос 
1
As a result of a chest trauma the costal cartilage was damaged. The cartilage regenerates due to the following layer of perichondrium:





2
In the histological specimen of a tooth germ the outer surface of the enamel organ is uneven, the cells of the inner layer show the reversal of polarity (inversion). These changes precede the beginning of the following process:





3
Calcification of the intercellular substance of bone tissue is accompanied by the deposition of hydroxyapatite crystals along the collagen fibers. This process requires the presence of alkaline phosphatase in the intercellular substance. What cell produces this enzyme?





4
During the formation of mantle dentin the synthetic activity of odontoblasts was disturbed, which will have an effect on the formation of the following fibers:





5
A histological preparation shows organ, where lymphocytes form three types of lymphoid structures: lymph nodules, medullary cords and lymphatic sinuses. What organ is it?





6
Hormonal form of a certain vitamin induces genome level synthesis of Ca binding proteins and enterocytes thus regulating the intestinal absorption of Ca2+ ions required for dental tissue development. What vitamin is it?





7
A histological specimen represents an organ made up of skeletal cross-striated muscle tissue. The organ has cutaneous, intermediate, and mucosal sections. The skin of the organ is stratified squamous keratinizing epithelium passing into nonkeratinizing epithelium in the mucosal section. Specify this organ:





8
As a result of a development anomaly a newborn has malformation of major salivary glands. This anomaly is caused by the damage of the following embryonal structure:





9
Throughout a year a 37-year-old woman periodically got infectious diseases of bacterial origin, their course was extremely lingering, remissions were short. Examination revealed low level of major classes of immunoglobulins. The direct cause of this phenomenon may be the following cell dysfunction:





10
Histological preparation of skin demonstrates dense unformed connective tissue. What layer of this organ is formed by such tissue?





 
 
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