study guide quiz questions

Question 1

Acrosome reaction

Answer 1

provides the sperm with an enzynatuc drill to get through the zona pellucia

Question 2

capacitation

Answer 2

destabilizes the sperm membrane to prepare it for the acrosome raction

Question 3

andoblasts (embyronblasts)

Answer 3

form into a hypoblast and epiblast

Question 4

epiblasts

Answer 4

consisits of tall columnar cells which separate from the cytotrophoblasts to form the amniotic cavity

Question 5

decidual reaction

Answer 5

swelling of interstitial cells (in between cells) of the endometrium

Question 6

significance of decidual reaction

Answer 6

nutrition and support of the developing embryo

Question 7

syncytiotrophoblast

Answer 7

the epithelial covering of highly cascular embryonic placental villi. it erodes the maternal sinusoids extablishing a primitive uteroplacental circulation. begin to receive nutrients from exposed arteries and veins

Question 8

gastrulation

Answer 8

source of all germ layers in the embryo

Question 9

sacrococcygel]al teratoma

Answer 9

a tumor that develops when the primitive streak fails to develop

Question 10

prechordal plate

Answer 10

point where epiblasts and hypoblasts attach. form the future mouth

Question 11

epiblasts

Answer 11

gives rise to all 3 layers . endoderm mesoderm and ectoderm

Question 12

endoderm

Answer 12

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