Question 1

Explain how the processes of gastrulation and organogenesis are related.

Accepted Answer

Gastrulation is the rearrangement and mi...

Question 2

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)  2,4,1,3
D)  1,3,2,4

Question 3

Which fetal hormone initiates labor?

Accepted Answer

A)  estrogen
B)  progesterone
C)  prolactin
D)  cortisol

Question 4

What does the ectoderm form?

Accepted Answer

A)  internal epithelial layer of the urinary system
B)  gonads and kidneys
C)  internal epithelial layer of the digestive system
D)  neural plate and neural tube

Question 5

Which hormone makes the medullary respiratory center more sensitive to carbon dioxide levels during pregnancy?

Accepted Answer

A)  progesterone
B)  estrogen
C)  human chorionic gonadotropin (hCG) 
D)  relaxin

Question 6

When environmental factors influence gene expression,this is referred to as:

Accepted Answer

A)  multiple alleles.
B)  codominance.
C)  polygenic inheritance.
D)  multifactorial inheritance.

Question 7

The organ systems rudimentarily form during the:

Accepted Answer

A)  fetal period.
B)  neo-natal period.
C)  embryonic period.
D)  pre-embryonic period.

Question 8

Which of the following does NOT occur during the embryonic period?

Accepted Answer

A)  implantation
B)  gastrulation
C)  organogenesis
D)  formation of the placenta

Question 9

After birth,the mother may lose excess fluids as a discharge from the uterus known as:

Accepted Answer

A)  colostrum.
B)  lochia.
C)  lactation.
D)  meconium.

Question 10

List the periods of prenatal development.

Accepted Answer

The periods of the prenatal de...

Question 11

The pre-embryonic period starts with a process called gastrulation.

Accepted Answer

A) True 
 B)False

Question 12

Describe what is housed within the umbilical cord.

Accepted Answer

The umbilical cord connects the center o...

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

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

Question 15

Discuss morning sickness and hyperemesis gravidarum.

Accepted Answer

Morning sickness is accompanied by nause...

Question 16

In the case of blood types,both alleles A and B may be expressed as the phenotype.This exemplifies:

Accepted Answer

A)  polygenic inheritance.
B)  incomplete dominance.
C)  codominance.
D)  sex-linked inheritance.

Question 17

What process starts at the embryonic period?

Accepted Answer

A)  fertilization
B)  formation of the blastula
C)  implantation
D)  gastrulation

Question 18

Which part of the embryo contributes to the fetal portion of the placenta?

Accepted Answer

A)  trophoblast
B)  hypoblast
C)  inner cell mass
D)  epiblast

Question 19

A pregnant woman typically needs about 300 extra calories each day to support both herself and the fetus.

Accepted Answer

A) True 
 B)False

Question 20

The gestation period is approximately:

Accepted Answer

A)  2 weeks.
B)  340 days.
C)  280 days.
D)  120 days.

Exam 27: Development Heredity

The gestation period is approximately:

Correct Answer
verified

What process starts at the embryonic period?

Correct Answer
verified

Correct Answer
verified

Which of the following does NOT occur during the embryonic period?

Correct Answer
verified

Discuss morning sickness and hyperemesis gravidarum.

Correct Answer
verified
Morning sickness is accompanied by nause...
View Answer

When environmental factors influence gene expression,this is referred to as:

Correct Answer
verified

The pre-embryonic period starts with a process called gastrulation.

Correct Answer
verified

What does the ectoderm form?

Correct Answer
verified

After birth,the mother may lose excess fluids as a discharge from the uterus known as:

Correct Answer
verified

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

Correct Answer
verified

Which fetal hormone initiates labor?

Correct Answer
verified

The organ systems rudimentarily form during the:

Correct Answer
verified

In the case of blood types,both alleles A and B may be expressed as the phenotype.This exemplifies:

Correct Answer
verified

Explain how the processes of gastrulation and organogenesis are related.

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

List the periods of prenatal development.

Correct Answer
verified
The periods of the prenatal de...
View Answer

Which part of the embryo contributes to the fetal portion of the placenta?

Correct Answer
verified

A pregnant woman typically needs about 300 extra calories each day to support both herself and the fetus.

Correct Answer
verified

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

Correct Answer
verified

Which hormone makes the medullary respiratory center more sensitive to carbon dioxide levels during pregnancy?

Correct Answer
verified

Describe what is housed within the umbilical cord.

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

Exam 27: Development Heredity

The gestation period is approximately:

Correct AnswerverifiedShow Answer

What process starts at the embryonic period?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following does NOT occur during the embryonic period?

Correct AnswerverifiedShow Answer

Discuss morning sickness and hyperemesis gravidarum.

Correct AnswerverifiedMorning sickness is accompanied by nause...View AnswerShow Answer

When environmental factors influence gene expression,this is referred to as:

Correct AnswerverifiedShow Answer

The pre-embryonic period starts with a process called gastrulation.

Correct AnswerverifiedShow Answer

What does the ectoderm form?

Correct AnswerverifiedShow Answer

After birth,the mother may lose excess fluids as a discharge from the uterus known as:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which fetal hormone initiates labor?

Correct AnswerverifiedShow Answer

The organ systems rudimentarily form during the:

Correct AnswerverifiedShow Answer

In the case of blood types,both alleles A and B may be expressed as the phenotype.This exemplifies:

Correct AnswerverifiedShow Answer

Explain how the processes of gastrulation and organogenesis are related.

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

List the periods of prenatal development.

Correct AnswerverifiedThe periods of the prenatal de...View AnswerShow Answer

Which part of the embryo contributes to the fetal portion of the placenta?

Correct AnswerverifiedShow Answer

A pregnant woman typically needs about 300 extra calories each day to support both herself and the fetus.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which hormone makes the medullary respiratory center more sensitive to carbon dioxide levels during pregnancy?

Correct AnswerverifiedShow Answer

Describe what is housed within the umbilical cord.

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Morning sickness is accompanied by nause...
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
Gastrulation is the rearrangement and mi...
View Answer

Correct Answer
verified
The periods of the prenatal de...
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