Question 1

Failure of the allantois to fully develop will impact the formation of the:

Accepted Answer

A)   digestive tract.
B)   kidneys.
C)   urinary bladder.
D)   skeletal muscles.

Question 2

Describe what is housed within the umbilical cord.

Accepted Answer

The umbilical cord connects the center o...

Question 3

Sperm entry into the secondary oocyte triggers the acrosomal reaction.

Accepted Answer

A) True 
 B)False

Question 4

Which germ layer forms the gonads and kidneys?

Accepted Answer

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

Question 5

Determine the series of hormonal events that leads to birth. 1. Oxytocin stimulates the placenta to secrete prostaglandins.
2)  Fetal cortisol stimulates the placenta to secrete estrogen.
3)  Prostaglandins dilate the cervix, and with oxytocin, increase the strength of uterine contractions.
4)  The high estrogen level stimulates the uterus to form oxytocin receptors.

Accepted Answer

A)   1, 4, 2, 3
B)   2, 4, 3, 1
C)   1, 3, 2, 4
D)   2, 4, 1, 3

Question 6

What cardiovascular changes are NOT typically expected in a pregnant female?

Accepted Answer

A)   increased blood pressure
B)   increased cardiac output
C)   varicose veins
D)   decreased hematocrit

Question 7

By what week of prenatal development will the placenta be established?

Accepted Answer

A)   week 8
B)   week 16
C)   week 4
D)   week 12

Question 8

When does the prenatal period begin?

Accepted Answer

A)   gestation
B)   infancy
C)   conception
D)   birth

Question 9

Predict the possibility of an offspring with a widow's peak, a dominant inherited trait affecting the hairline, when both parents are heterozygous for the trait.

Accepted Answer

A)   25% of the offspring will have a widow's peak.
B)   0% of the offspring will have a widow's peak.
C)   75% of the offspring will have a widow's peak.
D)   100% of the offspring will have a widow's peak.

Question 10

Is a single sperm cell capable of fertilizing a secondary oocyte alone? Explain.

Accepted Answer

Numerous sperm cells are needed to relea...

Question 11

The fusion of a sperm cell and secondary oocyte is known as:

Accepted Answer

A)   ovulation.
B)   capacitation.
C)   fertilization.
D)   meiosis.

Question 12

Which of the following is the inner germ layer?

Accepted Answer

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

Question 13

Explain how the processes of gastrulation and organogenesis are related.

Accepted Answer

Gastrulation is the rearrangement and mi...

Question 14

During which process is exposure to teratogens most devastating for the development of the embryo's organs?

Accepted Answer

A)   formation of the blastula
B)   organogenesis
C)   gastrulation
D)   cleavage

Question 15

Which hormone suppresses uterine contractions until birth?

Accepted Answer

A)   human chorionic gonadotropin (hCG) 
B)   melanocyte -stimulating hormone (MSH) 
C)   relaxin
D)   human placental lactogen (hPL)

Question 16

Cephalocaudal folding creates the:

Accepted Answer

A)   future trunk region.
B)   primitive gut.
C)   digestive tract.
D)   head and buttocks regions.

Question 17

The embryonic period of prenatal development occurs from week 3 until week 8.

Accepted Answer

A) True 
 B)False

Question 18

Parturition is also known as:

Accepted Answer

A)   dilation.
B)   childbirth.
C)   labor.
D)   placentation.

Question 19

After fertilization, a zygote rapidly divides to produce small, genetically identical cells known as:

Accepted Answer

A)   blastomeres.
B)   pronuclei.
C)   centromeres.
D)   trophoblasts.

Question 20

From what do both lanugo and the vernix caseosa protect the fetus?

Accepted Answer

A)   fat
B)   amniotic fluid
C)   urine
D)   blood

Exam 27: Development Heredity

Is a single sperm cell capable of fertilizing a secondary oocyte alone? Explain.

Correct Answer
verified
Numerous sperm cells are needed to relea...
View Answer

Which hormone suppresses uterine contractions until birth?

Correct Answer
verified

Which germ layer forms the gonads and kidneys?

Correct Answer
verified

After fertilization, a zygote rapidly divides to produce small, genetically identical cells known as:

Correct Answer
verified

What cardiovascular changes are NOT typically expected in a pregnant female?

Correct Answer
verified

Describe what is housed within the umbilical cord.

Correct Answer
verified
The umbilical cord connects the center o...
View Answer

The fusion of a sperm cell and secondary oocyte is known as:

Correct Answer
verified

When does the prenatal period begin?

Correct Answer
verified

By what week of prenatal development will the placenta be established?

Correct Answer
verified

Cephalocaudal folding creates the:

Correct Answer
verified

The embryonic period of prenatal development occurs from week 3 until week 8.

Correct Answer
verified

Which of the following is the inner germ layer?

Correct Answer
verified

Correct Answer
verified

Parturition is also known as:

Correct Answer
verified

Predict the possibility of an offspring with a widow's peak, a dominant inherited trait affecting the hairline, when both parents are heterozygous for the trait.

Correct Answer
verified

During which process is exposure to teratogens ^mostdevastating for the development of the embryo's organs?

Correct Answer
verified

Explain how the processes of gastrulation and organogenesis are related.

Correct Answer
verified
Gastrulation is the rearrangement and mi...
View Answer

From what do both lanugo and the vernix caseosa protect the fetus?

Correct Answer
verified

Sperm entry into the secondary oocyte triggers the acrosomal reaction.

Correct Answer
verified

Failure of the allantois to fully develop will impact the formation of the:

Correct Answer
verified

Exam 27: Development Heredity

Is a single sperm cell capable of fertilizing a secondary oocyte alone? Explain.

Correct AnswerverifiedNumerous sperm cells are needed to relea...View AnswerShow Answer

Which hormone suppresses uterine contractions until birth?

Correct AnswerverifiedShow Answer

Which germ layer forms the gonads and kidneys?

Correct AnswerverifiedShow Answer

After fertilization, a zygote rapidly divides to produce small, genetically identical cells known as:

Correct AnswerverifiedShow Answer

What cardiovascular changes are NOT typically expected in a pregnant female?

Correct AnswerverifiedShow Answer

Describe what is housed within the umbilical cord.

Correct AnswerverifiedThe umbilical cord connects the center o...View AnswerShow Answer

The fusion of a sperm cell and secondary oocyte is known as:

Correct AnswerverifiedShow Answer

When does the prenatal period begin?

Correct AnswerverifiedShow Answer

By what week of prenatal development will the placenta be established?

Correct AnswerverifiedShow Answer

Cephalocaudal folding creates the:

Correct AnswerverifiedShow Answer

The embryonic period of prenatal development occurs from week 3 until week 8.

Correct AnswerverifiedShow Answer

Which of the following is the inner germ layer?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Parturition is also known as:

Correct AnswerverifiedShow Answer

Predict the possibility of an offspring with a widow's peak, a dominant inherited trait affecting the hairline, when both parents are heterozygous for the trait.

Correct AnswerverifiedShow Answer

During which process is exposure to teratogens most devastating for the development of the embryo's organs?

Correct AnswerverifiedShow Answer

Explain how the processes of gastrulation and organogenesis are related.

Correct AnswerverifiedGastrulation is the rearrangement and mi...View AnswerShow Answer

From what do both lanugo and the vernix caseosa protect the fetus?

Correct AnswerverifiedShow Answer

Sperm entry into the secondary oocyte triggers the acrosomal reaction.

Correct AnswerverifiedShow Answer

Failure of the allantois to fully develop will impact the formation of the:

Correct AnswerverifiedShow Answer

Correct Answer
verified
Numerous sperm cells are needed to relea...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The umbilical cord connects the center o...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

During which process is exposure to teratogens ^mostdevastating for the development of the embryo's organs?

Correct Answer
verified

Correct Answer
verified
Gastrulation is the rearrangement and mi...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified