The first indication of gastrulation in the embryo is
formation of the primitive streak
formation of the notochord
formation of the neural tube
formation of extraembryonic mesoderm
formation of tertiary chorionic villi
10
80
Из 106
Somites may differentiate into all of the following EXCEPT
epidermis of skin
cartilage
muscle
bone
dermis of skin
10
81
Из 106
Intermediate mesoderm will give rise to the
kidneys and gonads
heart
neural tube
somites
notochord
10
82
Из 106
The developing embryo has a distinct human appearance by the end of
week 8
week 5
week 6
week 7
week 4
10
83
Из 106
The lateral mesoderm is divided into two distinct layers by the formation of the
intraembrionic coelom
extraembrionic coelom
cardiogenic region
notochord
yolk sac
10
84
Из 106
In pregnant woman on the second day after a fertilization as a result of cleavage had apostates of light and dark blastomeres. What possible result of such variant of cleavage will be?
A birth of monozygotic twins
The arrest of an embryogenesis
A birth of the boy
A birth of Siamese twins
A birth of the girl
10
85
Из 106
In embryo coated with a fertilization membrane, synthesis of lytic enzymes of a trophoblast genetical inhibited. What process of an embryogenesis can be late failed?
Implantation
Gastrulation
Delamination
Epiboly
Immigration
10
86
Из 106
On microslide of human embryo taken at a consensual abortion, it is detected primitive groove in which two layers of cells range: ectoderm and endoderm. At what stage of embryonic development there was an embryo?
Gastrulations
Neurulations
Organofaction
A progenesis
A histogenesis
10
87
Из 106
As a result of blocking separate ingredients of a genome, a cell gain characteristic for them
Morphological, biochemical and function singularities. What title has this process?
Differentiation
Capacitation
Reception
Adhesion
Determination
10
88
Из 106
Breaking architectonics in a somite region near to an endoderm and notochord is found during biopsy examination of embryonic material. Disorders of what tissues or organs will be?
Skeletal tissues
Striated skeletal muscle
Urogenital system
Striated cardiac muscle
Fibrillar connective tissue of a skin
10
89
Из 106
|
|
|
Breaking of differentiation of an endoderm is detected in embryonic material. Modification of development of what organ can arise at the given process?
Stomach
Hearts
Kidney
Aorta
Salivary gland
10
90
Из 106
The gastrulation or formation of germinal layers of an embryo descends different ways. What is the way of human ectoderm and endoderm formation?
Delamination
An invagination
Immigration
Invagination and epiboly
Epiboly
10
91
Из 106
During a gastrulation the embryos passes from histotrophic to hematrophic type of a feeding. What fetal membrane for the first time ensures it?
A chorion
Yolk sack
Amnion
A trophoblast
Allantois
10
92
Из 106
During which period is the embryo most susceptible to environmental influences that could induce the formation of nonlethal congenital malformations?
The fourth through eighth week of fetal life
The third month of fetal life
Fertilization to one week of fetal life
The second and third week of fetal life
The third trimester of fetal life
10
93
Из 106
A 10-14 % of newborn suffer from developmental anomalies. Which embryonic origin urinary system develops?
Intermediate mesoderm
Dorsal mesoderm
Visceral layer of ventral mesoderm
Parietal layer of ventral mesoderm
Mesenchyme
10
94
Из 106
Slow healing of an umbilicus is caused by patent primitive urinary duct - urachus. Which embryonic origin are urinary bladder and urachus develop from?
Allantois
Cloaca
Urogenital sinus
Paramesonephric duct
.Mesonephric duct
10
95
Из 106
At early stages of embryos development appear a finger-like diverticulum of a yolk sac which grows in connecting stalk. What name has this fetal membrane?
Allantois
Amnion
Placenta
Umbilical cord
Yolk sac
10
96
Из 106
On a microslide of a cross section of an organ that is formed by the mucous connective tissue, two arteries and a vein is introduced. What is the organ on microslide?
Umbilical cord
Yolk sac
|
|
|
Amnion
Allantois
Placenta
10
97
Из 106
Дата добавления: 2023-01-08; просмотров: 25; Мы поможем в написании вашей работы! |
Мы поможем в написании ваших работ!