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What is the wall of yolk sac made up of?



a. +extraembryonic endoderm and extraembryonic mesoderm

b. extraembryonic ectoderm and extraembryonic mesoderm

c. embryonic ectoderm and embryonic mesoderm

d. embryonic endoderm and embryonic mesoderm

e. embryonic mesoderm and embryonic mesenchyme

 

What do we call the extraembryonic organ that is formed at the end of gasrulation, and represents finger-shaped outgrowth of the extraembryonic endoderm projecting into the connecting stalk?

a. amnion

b. +allantois

c. yolk sac

d. placenta

e. umbilical cord

 

74. Extraembryonic organ that connects germ with maternal organism:

a. yolk sac

b. amnion

c. allantois

d. umbilical cord

e. +placenta

 

What do we call the extraembryonic organ connecting the embryo with the maternal organism and consisting of fetal and maternal parts?

a. umbilical cord

b. amnion

c. +placenta

d. yolk sac

e. allantois

 

 

What is the maternal placenta made up of?

a. +chorionic plate and chorionic villi

b. decidual membrane of the endometrium

c. deciduous capsular membrane

d. deciduous parietal membrane

e. myometrium

 

What is the maternal placenta made up of?

a. chorionic plate and chorionic villi

b. +decidual membrane of the endometrium

c. myometrium

d. deciduous capsular membrane

e. deciduous parietal membrane

 

What is cotyledon of the developed placenta made up of?

a. +branchy anchoring villus

b. lacuna containing maternal blood

c. basal lamina and septa

d. deciduous capsular membrane

e. deciduous parietal membrane

 

What function does the umbilical cord perform?

a. protective

b. hemopoietic

c. endocrine

d. immune

e. +transport

 

What type of tissue is characterized by the polar differentiation of the cells?

a. neural

b. loose irregular connective

c. muscular

d. +epithelial

e. bone

 

81. Tissue that does not contain blood vessels and is devoid of intercellular substance:

a.+epithelial

b. bone

c. neural

d. loose irregular connective

e. muscular

 

82. Formation of basal membrane of the surface epithelium is due to the vital activity of:

a. blood plasma

b. nervous elements and subjacent connective tissue

c. fatty tissue

d. +epithelium and subjacent connective tissue

e. muscular tissue

 

83. Location of the surface epithelium:

a. +on the outer surface of the body and the luminal surfaces of cavities

b. within the mucosal lamina propria

c. within the submucosa of alimentary canal

d. within the intermuscular connective tissue of the tongue

e. within the cartilage of trachea

 

84. Epithelial cells are bound together by means of:

a. network of elastic fibres

b. network of collagen fibres

c.+ different types of cell contacts

e. mineralized amorphous substance

 

85. Simple squamous epithelium (mesothelium) lines:

a. gastric mucosa

b. tracheal mucosa

c. +serous tunics

d. esophageal mucosa

e. ureteral mucosa

 







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