fertilization & early development pre/post lab {lab 52}

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A single completed oogenesis sequence produces four functional ova (eggs). A) True B) False

B) False

The ________ surrounds the oocyte and early cleavage stages. A) chorionic villi B) trophoblast C) zona pellucida D) amnion

C) zona pellucida

The placenta is comprised of A) only the myometrium. B) only the decidua basalis. C) only the chorionic villi. D) combinations of the decidua basalis and chorionic villi.

D) combinations of the decidua basalis and chorionic villi.

Which of the following is not an extraembryonic membrane? A) allantois B) amnion C) chorion D) myometrium

D) myometrium

The ovum and sperm unite and form a diploid cell called the A) pronucleus. B) blastocyst. C) morula. D) zygote.

D) zygote.

A single completed spermatogenesis sequence produces four functional sperm. A) True B) False

A) True

The zona pellucida gel layer surrounds the secondary oocyte and early development stages through the morula. A) True B) False

A) True

The implantation of the blastocyst occurs into the ________ about a week after fertilization. A) endometrium B) myometrium C) perimetrium D) amnion

A) endometrium

Which of the following is not an extraembryonic membrane? A) umbilical cord B) amnion C) chorion D) yolk sac

A) umbilical cord

The ________ is the development stage that implants in the endometrium. A) morula B) blastocyst C) zygote D) 2-cell stage

B) blastocyst

The umbilical cord possesses A) one umbilical artery and one umbilical vein. B) two umbilical arteries and one umbilical vein. C) one umbilical artery and two umbilical veins. D) two umbilical arteries and two umbilical veins

B) two umbilical arteries and one umbilical vein.

Fertilization and formation of the zygote occurs in the A) ovary. B) uterine tube. C) uterus. D) vagina.

B) uterine tube.

The embryonic stage of human development exists A) from fertilization until implantation. B) through the first four weeks of development. The embryonic stage of human development exists A) from fertilization until implantation. B) through the first four weeks of development. C) through the first eight weeks of development. D) from fertilization until birth.

C) through the first eight weeks of development.


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