Question 1

Implantation occurs during the

Accepted Answer

A)  fertilization.
B)  first week.
C)  second week.
D)  second month.
E)  fourth month.F) B) and D)
G) C) and E)

Question 2

In human development,the ______ is the site of early blood cell formation for the fetus.

Accepted Answer

A)  umbilical cord
B)  placenta
C)  amniotic fluid
D)  yolk sac
E)  allantoisF) C) and D)
G) A) and C)

Question 3

The ______ is a dorsal supporting rod present in the early embryonic development of the vertebrates.

Accepted Answer

A)  neural plate
B)  neural tube
C)  notochord
D)  neurula
E)  vertebral columnF) D) and E)
G) All of the above

Question 4

As we become older,the

Accepted Answer

A)  skin becomes more elastic.
B)  heart decreases in size.
C)  blood vessels become harder.
D)  production of gametes continues in both sexes.
E)  liver receives increased blood flow.F) A) and D)
G) A) and E)

Question 5

A pregnancy test is based on the production of ___ by the ____.

Accepted Answer

A)  FSH; anterior pituitary
B)  estrogen; ovary
C)  progesterone; corpus luteum
D)  hCG; trophoblast
E)  GnRH; hypothalamusF) A) and B)
G) C) and D)

Question 6

The allantoic blood vessels

Accepted Answer

A)  are analogous to the umbilical blood vessels in humans.
B)  are a structure composed of two germ layers.
C)  lie next to the shell in chicks.
D)  have the same function in chicks as humans.
E)  become the chorionic villi.F) C) and D)
G) A) and D)

Question 7

Which of the following does not occur during the process of fertilization?

Accepted Answer

A)  The sperm cell releases acrosomal enzymes.
B)  The sperm cell enters the egg and the nucleus is released.
C)  The nucleus of the sperm and egg cell fuse.
D)  The plasma membrane of the sperm head and egg fuse.
E)  The tail bores a hole in the zona pellucida,which the head then penetrates.F) A) and E)
G) A) and C)

Question 8

The cardiovascular and urinary systems form from the _______ layer.

Accepted Answer

A)  endoderm
B)  ectoderm
C)  mesoderm
D)  blastoderm
E)  gastrodermF) A) and B)
G) B) and D)

Question 9

When a baby is born,what change(s) do NOT need to occur in fetal circulation for it to survive?

Accepted Answer

A)  The oval opening (foramen ovale) must close.
B)  The arterial duct must close.
C)  The umbilical arteries and veins close.
D)  Blood must be able to pass from the right side to the left side.
E)  Fetal blood must be shunted toward the lungs after tying off the umbilical cord.F) B) and E)
G) C) and D)

Question 10

Which of these is not a change in the skin that occurs with aging?

Accepted Answer

A)  loss of elasticity
B)  loss of adipose tissue
C)  loss of sweat glands
D)  loss of sebaceous (oil) glands
E)  All of the answer choices are changes seen in the skin with aging.F) A) and E)
G) B) and C)

Question 11

The hormone ____ from the ____ causes mammary lobules in the breast to contract,causing milk to flow.

Accepted Answer

A)  prolactin; hypothalamus
B)  prolactin; anterior pituitary
C)  oxytocin; hypothalamus
D)  oxytocin; anterior pituitary
E)  estrogen; ovariesF) A) and D)
G) B) and C)

Question 12

List and describe the major events during the three stages of birth.

Accepted Answer

Stage 1: The cervical canal disappears a...

Question 13

A homeotic gene codes for a(n) ____ protein,a sequence of 60 amino acids,sets of which determine the genes to be turned on during development.

Accepted Answer

A)  induction
B)  morphogenesis
C)  growth
D)  regulatory
E)  homeodomainF) B) and C)
G) All of the above

Question 14

Some of the changes that are attributed to aging are actually brought about by poor health habits.One of these is osteoporosis,which could be prevented by

Accepted Answer

A)  adequate calcium intake and eating a high-protein diet.
B)  not smoking cigarettes,adequate calcium intake,and exercise.
C)  exercise and a high-protein diet.
D)  drinking adequate amounts of water,and exercising.
E)  a low-fat and protein diet.F) All of the above
G) A) and E)

Question 15

The placenta develops from

Accepted Answer

A)  fetal membranes only.
B)  maternal tissue only.
C)  both fetal and maternal tissue.
D)  separate polar bodies that develop just the placental tissues.
E)  from the yolk sac.F) B) and E)
G) B) and C)

Question 16

______ is the parceling out of maternal determinants as mitosis occurs in embryonic cells.

Accepted Answer

A)  Homeostasis
B)  Induction
C)  Morphogenesis
D)  Cytoplasmic segregation
E)  AgingF) All of the above
G) B) and E)

Question 17

Which statement is NOT true regarding aging?

Accepted Answer

A)  A genetic factor is indicated when children of long-lived parents live a long time.
B)  Different body processes wear out.
C)  Lack of calcium in a person's diet may lead to bone loss.
D)  The immune system increases in activity.
E)  Some proteins become crosslinked.F) C) and D)
G) A) and D)

Question 18

A fertilized egg undergoes cell division without further growth in the process called

Accepted Answer

A)  cleavage.
B)  gastrulation.
C)  differentiation.
D)  morphogenesis.
E)  embryology.F) A) and B)
G) C) and D)

Question 19

Which of the following hormones causes the uterus to contract?

Accepted Answer

A)  oxytocin
B)  estrogen
C)  progesterone
D)  testosterone
E)  prolactinF) B) and E)
G) B) and D)

Question 20

Morphogenesis is

Accepted Answer

A)  the total life cycle of any animal.
B)  a process by which tissues are shaped into organs.
C)  the mechanism by which gametes are formed.
D)  a study of the beginning and ending of life.
E)  the study of aging.F) None of the above
G) A) and B)

Exam 22: Development and Aging

When a baby is born,what change(s) do NOT need to occur in fetal circulation for it to survive?

Correct AnswerverifiedShow Answer

A fertilized egg undergoes cell division without further growth in the process called

Correct AnswerverifiedShow Answer

In human development,the ______ is the site of early blood cell formation for the fetus.

Correct AnswerverifiedShow Answer

Which of these is not a change in the skin that occurs with aging?

Correct AnswerverifiedShow Answer

The cardiovascular and urinary systems form from the _______ layer.

Correct AnswerverifiedShow Answer

Some of the changes that are attributed to aging are actually brought about by poor health habits.One of these is osteoporosis,which could be prevented by

Correct AnswerverifiedShow Answer

Which statement is NOT true regarding aging?

Correct AnswerverifiedShow Answer

Implantation occurs during the

Correct AnswerverifiedShow Answer

The hormone ____ from the ____ causes mammary lobules in the breast to contract,causing milk to flow.

Correct AnswerverifiedShow Answer

Which of the following hormones causes the uterus to contract?

Correct AnswerverifiedShow Answer

The placenta develops from

Correct AnswerverifiedShow Answer

As we become older,the

Correct AnswerverifiedShow Answer

The ______ is a dorsal supporting rod present in the early embryonic development of the vertebrates.

Correct AnswerverifiedShow Answer

Which of the following does not occur during the process of fertilization?

Correct AnswerverifiedShow Answer

The allantoic blood vessels

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A pregnancy test is based on the production of ___ by the ____.

Correct AnswerverifiedShow Answer

Morphogenesis is

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List and describe the major events during the three stages of birth.

Correct AnswerverifiedStage 1: The cervical canal disappears a...View AnswerShow Answer

A homeotic gene codes for a(n) ____ protein,a sequence of 60 amino acids,sets of which determine the genes to be turned on during development.

Correct AnswerverifiedShow Answer

______ is the parceling out of maternal determinants as mitosis occurs in embryonic cells.

Correct AnswerverifiedShow Answer

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The hormone from the causes mammary lobules in the breast to contract,causing milk to flow.

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A pregnancy test is based on the production of _ by the __.

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Stage 1: The cervical canal disappears a...
View Answer

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