Question 1

The primary function of surfactant is to increase surface tension in the newborn's lungs.

Accepted Answer

A) True 
 B)False

Question 2

After birth, the ductus arteriosus constricts and becomes the ligamentum arteriosum.

Accepted Answer

A) True 
 B)False

Question 3

Proteolytic enzymes from the trophoblast aid implantation of an embryo.

Accepted Answer

A) True 
 B)False

Question 4

During development of the hands and feet in the late embryonic stage, the fingers and toes form as extensions of muscular, nervous, and connective tissue from the limb buds. Completion of finger and toe extension triggers a process in which the webbed tissue between each digit is signaled/programmed to die. This process is known as ________.

Accepted Answer

The answer of During development of the hands and feet...

Question 5

Factors that can cause congenital malformations by affecting an embryo during its periods of rapid growth and development are called teratogens.

Accepted Answer

A) True 
 B)False

Question 6

A relatively new theory has arisen regarding the development of twins at fertilization. In addition to the phenomena of identical and fraternal twins, the theory suggests that semi-identical twins called polar body twins can occur if fertilization occurs in the second polar body immediately after fertilization of the oocyte (different sperm fertilizing each) . If this is true, what should be true about the zygotes?

Accepted Answer

A)  One twin will be physically smaller than the other after birth and later in life.
B)  At least one of the twins will have a genetic abnormality due to the nature of the division that produces the secondary oocyte and polar body.
C)  The twins will possess exactly the same genetic material.
D)  The twins will have the exact same maternal genes, but their paternal genes will vary.E) C) and D)
F) All of the above

Question 7

During the embryonic stage, the primary germ layers develop from the

Accepted Answer

A)  placenta.
B)  blastocyst.
C)  embryonic disc.
D)  morula.E) A) and C)
F) A) and B)

Question 8

The cells of a blastocyst that help form the chorion constitute the

Accepted Answer

A)  blastomere.
B)  inner cell mass.
C)  trophoblast.
D)  zona pellucida.E) None of the above
F) A) and C)

Question 9

After birth, the foramen ovale is closed as a result of

Accepted Answer

A)  increasing pressure in the right atrium.
B)  increasing pressure in the left atrium.
C)  increased resistance in the pulmonary circuit.
D)  decreased blood volume in the pulmonary veins.E) C) and D)
F) A) and B)

Question 10

Fetal hemoglobin becomes largely replaced with adult hemoglobin

Accepted Answer

A)  after the first trimester.
B)  at birth.
C)  from 4 months after birth.
D)  when a child starts school.E) C) and D)
F) A) and B)

Question 11

The postnatal period extends from

Accepted Answer

A)  the fertilized egg until the end of life.
B)  fertilization to birth.
C)  birth to death.
D)  the beginning of the fetal period until the beginning of childhood.E) B) and C)
F) A) and C)

Question 12

Which of the following provides the main source of energy for a newborn during its first few days?

Accepted Answer

A)  Glucose
B)  Glycogen
C)  Fat
D)  ProteinE) None of the above
F) B) and D)

Question 13

The period of preactive dying takes

Accepted Answer

A)  up to six months.
B)  up to three months.
C)  about a month.
D)  two weeks for cancer, two months for heart disease.E) A) and B)
F) A) and C)

Question 14

Conjoined twins result from incomplete twinning, which occurs during the first month of gestation.

Accepted Answer

A) True 
 B)False

Question 15

Changes that occur as death approaches include

Accepted Answer

A)  limbs become cool and numb.
B)  sudden high-grade fevers.
C)  prolonged high blood pressure.
D)  flushing of the skin.E) None of the above
F) C) and D)

Question 16

Development is a continuous process and includes growth.

Accepted Answer

A) True 
 B)False

Question 17

A major difference between fetal blood flow and adult blood flow is that in the fetus the

Accepted Answer

A)  inferior vena cava contains blood high in oxygen.
B)  pulmonary artery delivers blood to the lungs.
C)  femoral vein contains blood low in oxygen.
D)  internal iliac arteries are known as umbilical arteries.E) A) and B)
F) A) and C)

Question 18

In an adult heart, the previous location of the foramen ovale is marked by a depression called the ________.

Accepted Answer

The answer of In an adult heart, the previous location...

Question 19

Some reproductive tumors produce hormones. One sign of the presence of a reproductive cancer is a positive result from a basic pregnancy test when pregnancy is not possible/very unlikely. These cancers produce a positive test result because they are secreting

Accepted Answer

A)  estrogen.
B)  progesterone.
C)  hCG.
D)  ADH.E) B) and C)
F) C) and D)

Question 20

Considering the roles of estrogen and progesterone in the female reproductive cycle, how would fertility be affected if a woman had a hormonal disorder involving a constant high secretion of progesterone?

Accepted Answer

A)  The woman could become pregnant very easily after sexual intercourse if ovulation occurs because progesterone makes the cervical mucus waterier and easily penetrable by sperm.
B)  The woman would have an easier time becoming pregnant because progesterone stimulates and controls ovulation, so the chances of fertilization at any point would be higher.
C)  Pregnancy would not be easily achieved because progesterone makes uterine and cervical secretions too harsh for sperm survival and movement.
D)  Fertility would be lower for the woman because progesterone directly inhibits sperm tail function.E) C) and D)
F) A) and B)

Exam 23: Pregnancy, Growth, and Development

In an adult heart, the previous location of the foramen ovale is marked by a depression called the ________.

Correct Answer
verified

Some reproductive tumors produce hormones. One sign of the presence of a reproductive cancer is a positive result from a basic pregnancy test when pregnancy is not possible/very unlikely. These cancers produce a positive test result because they are secreting

Correct Answer
verified

Fetal hemoglobin becomes largely replaced with adult hemoglobin

Correct Answer
verified

The postnatal period extends from

Correct Answer
verified

A major difference between fetal blood flow and adult blood flow is that in the fetus the

Correct Answer
verified

The cells of a blastocyst that help form the chorion constitute the

Correct Answer
verified

Conjoined twins result from incomplete twinning, which occurs during the first month of gestation.

Correct Answer
verified

Factors that can cause congenital malformations by affecting an embryo during its periods of rapid growth and development are called teratogens.

Correct Answer
verified

Development is a continuous process and includes growth.

Correct Answer
verified

Changes that occur as death approaches include

Correct Answer
verified

The primary function of surfactant is to increase surface tension in the newborn's lungs.

Correct Answer
verified

The period of preactive dying takes

Correct Answer
verified

After birth, the foramen ovale is closed as a result of

Correct Answer
verified

Considering the roles of estrogen and progesterone in the female reproductive cycle, how would fertility be affected if a woman had a hormonal disorder involving a constant high secretion of progesterone?

Correct Answer
verified

Correct Answer
verified

Proteolytic enzymes from the trophoblast aid implantation of an embryo.

Correct Answer
verified

During the embryonic stage, the primary germ layers develop from the

Correct Answer
verified

After birth, the ductus arteriosus constricts and becomes the ligamentum arteriosum.

Correct Answer
verified

Which of the following provides the main source of energy for a newborn during its first few days?

Correct Answer
verified

Correct Answer
verified

Exam 23: Pregnancy, Growth, and Development

In an adult heart, the previous location of the foramen ovale is marked by a depression called the ________.

Correct AnswerverifiedShow Answer

Some reproductive tumors produce hormones. One sign of the presence of a reproductive cancer is a positive result from a basic pregnancy test when pregnancy is not possible/very unlikely. These cancers produce a positive test result because they are secreting

Correct AnswerverifiedShow Answer

Fetal hemoglobin becomes largely replaced with adult hemoglobin

Correct AnswerverifiedShow Answer

The postnatal period extends from

Correct AnswerverifiedShow Answer

A major difference between fetal blood flow and adult blood flow is that in the fetus the

Correct AnswerverifiedShow Answer

The cells of a blastocyst that help form the chorion constitute the

Correct AnswerverifiedShow Answer

Conjoined twins result from incomplete twinning, which occurs during the first month of gestation.

Correct AnswerverifiedShow Answer

Factors that can cause congenital malformations by affecting an embryo during its periods of rapid growth and development are called teratogens.

Correct AnswerverifiedShow Answer

Development is a continuous process and includes growth.

Correct AnswerverifiedShow Answer

Changes that occur as death approaches include

Correct AnswerverifiedShow Answer

The primary function of surfactant is to increase surface tension in the newborn's lungs.

Correct AnswerverifiedShow Answer

The period of preactive dying takes

Correct AnswerverifiedShow Answer

After birth, the foramen ovale is closed as a result of

Correct AnswerverifiedShow Answer

Considering the roles of estrogen and progesterone in the female reproductive cycle, how would fertility be affected if a woman had a hormonal disorder involving a constant high secretion of progesterone?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Proteolytic enzymes from the trophoblast aid implantation of an embryo.

Correct AnswerverifiedShow Answer

During the embryonic stage, the primary germ layers develop from the

Correct AnswerverifiedShow Answer

After birth, the ductus arteriosus constricts and becomes the ligamentum arteriosum.

Correct AnswerverifiedShow Answer

Which of the following provides the main source of energy for a newborn during its first few days?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
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