Question 1

The trophoblast will eventually become the ________.

Accepted Answer

A)   allantois
B)   archenteron
C)   lining of the endometrium
D)   placenta

Question 2

The correct sequence of preembryonic structures is ________.

Accepted Answer

A)   zygote, morula, blastocyst
B)   zygote, blastocyst, morula
C)   morula, zygote, blastocyst
D)   morula, blastocyst, zygote

Question 3

All of the following are extraembryonic membranes EXCEPT ________.

Accepted Answer

A)   yolk sac
B)   allantois
C)   chorion
D)   placenta D

Question 4

Implantation involves ________.

Accepted Answer

A)   placenta completion
B)   formation of germ layers
C)   fusion of egg and sperm
D)   embedding of the blastocyst in the uterine wall

Question 5

Derivatives of the mesoderm include ________.

Accepted Answer

A)   glands of the digestive tract
B)   nervous tissue
C)   skeletal system
D)   none of the above

Question 6

Cleavage as part as embryonic development is distinctive because it involves ________.

Accepted Answer

A)   cell division by mitosis
B)   meiosis
C)   the fusion of gametes
D)   none of the above

Question 7

What stage of preembryonic development results in a solid ball of nearly identical cells?

Accepted Answer

A)   zygote
B)   blastomere
C)   blastocyst
D)   morula

Question 8

Derivatives of the endoderm include ________.

Accepted Answer

A)   synovial membranes
B)   blood, bone, and lymphoid tissue
C)   the digestive tract
D)   epithelium of the respiratory tract

Question 9

The formation on endodermal and ectodermal germ layers occurs at ________.

Accepted Answer

A)   fertilization
B)   gastrulation
C)   cleavage
D)   blastula formation

Question 10

During which stage of labor is the fetus delivered?

Accepted Answer

A)   expulsion stage
B)   placental stage
C)   dilation stage
D)   gastrula stage

Question 11

At which stage of labor is the afterbirth delivered?

Accepted Answer

A)   dilation stage
B)   expulsion stage
C)   placental stage
D)   none of the above

Question 12

The placenta is made up of a contribution from mother and fetus. Which portion is from the fetus?

Accepted Answer

A)   umbilicus
B)   amnion
C)   chorion
D)   yolk sac

Question 13

Derivatives of the ectoderm include ________.

Accepted Answer

A)   epithelium of the digestive tract
B)   epithelium of the respiratory tract
C)   nervous tissue
D)   none of the above

Question 14

Which of the following is not a germ layer?

Accepted Answer

A)   epiderm
B)   endoderm
C)   mesoderm
D)   ectoderm A

Question 15

Which of the following is highly UNLIKELY method of producing a child?

Accepted Answer

A)   embryo transfer
B)   ectopic pregnancy
C)   in vitro fertilization
D)   none of the above

Question 16

The deciduas basalis is ________.

Accepted Answer

A)   not a maternal contribution to the placenta
B)   remains in the uterus after birth
C)   located between the developing embryo and myometrium
D)   none of the above

Question 17

Sperm become functional when ________.

Accepted Answer

A)   capacitation occurs
B)   they become spermatids
C)   stored in the uterus for several days
D)   the tail disappears A

Question 18

The formation of endodermal and epidermal germ layers occurs at ________.

Accepted Answer

A)   gastrulation
B)   cleavage
C)   fertilization
D)   blastula formation

Question 19

Which extraembryonic membrane appears first?

Accepted Answer

A)   yolk sac
B)   amnion
C)   chorion
D)   allantois

Question 20

Which trimester of pregnancy do all major organs systems begin to develop?

Accepted Answer

A)   first
B)   second
C)   third
D)   none of the above

Exam 46: Development

The trophoblast will eventually become the ________.

Correct AnswerverifiedShow Answer

The correct sequence of preembryonic structures is ________.

Correct AnswerverifiedShow Answer

All of the following are extraembryonic membranes EXCEPT ________.

Correct AnswerverifiedD

Implantation involves ________.

Correct AnswerverifiedShow Answer

Derivatives of the mesoderm include ________.

Correct AnswerverifiedShow Answer

Cleavage as part as embryonic development is distinctive because it involves ________.

Correct AnswerverifiedShow Answer

What stage of preembryonic development results in a solid ball of nearly identical cells?

Correct AnswerverifiedShow Answer

Derivatives of the endoderm include ________.

Correct AnswerverifiedShow Answer

The formation on endodermal and ectodermal germ layers occurs at ________.

Correct AnswerverifiedShow Answer

During which stage of labor is the fetus delivered?

Correct AnswerverifiedShow Answer

At which stage of labor is the afterbirth delivered?

Correct AnswerverifiedShow Answer

The placenta is made up of a contribution from mother and fetus. Which portion is from the fetus?

Correct AnswerverifiedShow Answer

Derivatives of the ectoderm include ________.

Correct AnswerverifiedShow Answer

Which of the following is not a germ layer?

Correct AnswerverifiedA

Which of the following is highly UNLIKELY method of producing a child?

Correct AnswerverifiedShow Answer

The deciduas basalis is ________.

Correct AnswerverifiedShow Answer

Sperm become functional when ________.

Correct AnswerverifiedA

The formation of endodermal and epidermal germ layers occurs at ________.

Correct AnswerverifiedShow Answer

Which extraembryonic membrane appears first?

Correct AnswerverifiedShow Answer

Which trimester of pregnancy do all major organs systems begin to develop?

Correct AnswerverifiedShow Answer

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