On microslide of the bulb of the fetus eye a damage of a cornea is observed. Part of what germ layer has been struck during embryonic development
Ectoderm
Mesoderm
Endoderm
Dermatome
Nephrotome
10
98
Из 106
During an embryogenesis there was a breaking shaping of a pharyngeal gut. Specify possible localization of anomalies of development?
Organs of an oral cavity.
A stomach
An ileum
A pancreas
A jejunum
10
99
Из 106
Women was ill by flu on the 7-14 days of pregnancy. In which of the following structures may be development of pathologic changes?
Breach of ecto- and endordermal formation
Breach of mesenchyme formation
Breach of mesordermal formation
Breach of the process of epibole
Breach of the process of invagination
10
100
Из 106
As the result of acrosomal reaction lack the destruction of junctions between oocyte granulosa cells did not occur under fertilization. What process was broken?
Denudation
Capacitation
Cortical reaction
Zona reaction
Determination
10
101
Из 106
It was determined compression of the fetus umbilical cord, but it was not destroyed blood circulation between fetus and mother. Presence of what structures cause this process?
Wharton's jelly
.Layer of artery
Layer of vein
Allantois
Yolk sac stalk
10
102
Из 106
A metaphase-blocking dose of colchicines works by which of the following mechanisms
.Inhibition of tubulin polymerization
Depolymerization of myosin
Enhancement of tubulin polymerization
Depolymerization of actin
Binding to and stabilizing microtubules
10
103
Из 106
Compression of umbilical cord took place. But blood circulation between fetus and maternal organism happened normally. What morphologic components of the umbilical cord promoted to this?
Mucuous tissue
Allantois residue
Tunic of umbilical arteries
Tunic of umbilical vein
Yolk sac residue
10
104
Из 106
There is connecting with the gut vesicle is visible on the histologic micropreparation . It is an extraembryonic organ. Primordial germ cells and erythroblasts (megaloblasts) are located in its wall. What organ is this?
Yolk sac
Allantois
Placenta
Umbilical cord
Amnion
10
105
Из 106
Destruction of neural crest took place in embryo after bacterial toxins influence. What element development will be absent in this case?
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C-cells, pigment cells, suprarenal medulla
Myocardium, epicardium
Kidney, ureter
Skin dermis
Gastric and intestinal epithelium
10
106
Из 106
The prechordal plate is origin of development of the future epithelium of
esophagus
.heart
umbilical cord
anus
nose
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