Question 1

During the ____ month,the fetal heartbeat is first loud enough to be heard by a physician with a stethoscope.

Accepted Answer

A)   first
B)   second
C)   fourth
D)   sixth
E)   eighthF) D) and E)
G) A) and B)

Question 2

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) A) and B)
G) A) and C)

Question 3

Which system below develops first in the embryo?

Accepted Answer

A)   reproductive
B)   circulatory
C)   excretory
D)   respiratory
E)   nervousF) B) and D)
G) A) and E)

Question 4

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 and an adequate calcium intake
C)   exercise and a high protein diet
D)   drinking adequate water and exercise
E)   a low fat and protein dietF) A) and D)
G) B) and D)

Question 5

Milk production is triggered in breasts following several days of ____ production by the ____.

Accepted Answer

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

Question 6

The sac that surrounds the fetus and usually ruptures just before childbirth is the

Accepted Answer

A)   gastrula.
B)   allantois.
C)   yolk sac.
D)   amnion.
E)   archenteron.F) A) and E)
G) B) and C)

Question 7

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) None of the above
G) A) and E)

Question 8

The formation of the lens of the vertebrate eye from a skin layer in contact with an outgrowth of the embryonic brain is an example of

Accepted Answer

A)   cellular aggregation.
B)   induction.
C)   morphogenesis.
D)   gastrulation.
E)   neurulation.F) A) and B)
G) A) and C)

Question 9

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 10

Which of the following ducts connect the pulmonary trunk to the aorta in the fetus?

Accepted Answer

A)   oval opening
B)   venous duct
C)   arterial duct
D)   umbilical artery
E)   umbilical veinF) B) and E)
G) D) and E)

Question 11

What of the following would NOT be a method that would prevent one species' sperm from fertilizing another species' egg?

Accepted Answer

A)   The chemical and other behavioral cues for mating are unlikely to lead to insemination by a male of another species.
B)   The reactions between the sperm acrosome and the surface of the egg are generally species-specific.
C)   Any successful fertilization would require a successful match of chromosomes and genes to produce a viable zygote.
D)   The chemical elements of the layers of the egg match the chemical elements of the sperm acrosome.
E)   The joining of two differing sets of chromosomes does not provide the proper genetic information for the development of an embryo.F) C) and D)
G) A) and D)

Question 12

During which stage of labor will the cervix be dilated?

Accepted Answer

A)   stage 1
B)   stage 2
C)   stage 3
D)   stage 4
E)   The cervix does not need to dilate for laborF) C) and E)
G) B) and E)

Question 13

Which one of the following is NOT derived from endoderm?

Accepted Answer

A)   gut lining
B)   hormonal glands
C)   lungs
D)   bones
E)   bladder liningF) B) and D)
G) C) and D)

Question 14

Which statement is NOT correct about the placenta?

Accepted Answer

A)   Oxygenated blood flows to the fetus via the umbilical vein.
B)   Fetal blood flows to the placenta via the umbilical artery.
C)   Oxygen and nutrients go to the fetus from the maternal circulatory system.
D)   Maternal and fetal blood mix with each other.
E)   The placenta produces progesterone and estrogen.F) B) and D)
G) A) and E)

Question 15

The process in which neighboring cells influence the development of each other,either by direct contact or by production of chemical signals,is

Accepted Answer

A)   neurulation.
B)   gastrulation.
C)   induction.
D)   cytoplasmic segregation.
E)   homeotic pattern formation.F) A) and E)
G) B) and C)

Question 16

Which of the following describes the process in which cells become specialized in structure and function?

Accepted Answer

A)   development
B)   pattern formation
C)   cellular differentiation
D)   morphogenesis
E)   embryologyF) A) and B)
G) A) and C)

Question 17

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 C)

Question 18

As aging occurs changes are seen in the function of body systems,among these changes are all but which of the following?

Accepted Answer

A)   A decline in the production of hormones leading to menopause and other changes.
B)   A decline in the function of the immune system leading to increases in certain diseases, like cancer.
C)   An increase in cross-links between proteins leading to decreased flexibility.
D)   An increase in the production of hormones leading to menopause and other changes.
E)   An increase in the size of the heart muscle.F) A) and B)
G) A) and E)

Question 19

The cardiovascular and urinary systems form from the _______ layer.

Accepted Answer

A)   endoderm
B)   ectoderm
C)   mesoderm
D)   blastoderm
E)   gastrodermF) All of the above
G) A) and B)

Question 20

The last tissue layer to be formed during gastrulation is the

Accepted Answer

A)   endoderm.
B)   ectoderm.
C)   mesoderm.
D)   gastroderm.
E)   epiderm.F) A) and B)
G) None of the above

Exam 22: Development and Aging

During the ____ month,the fetal heartbeat is first loud enough to be heard by a physician with a stethoscope.

Correct AnswerverifiedShow Answer

During which stage of labor will the cervix be dilated?

Correct AnswerverifiedShow Answer

Which system below develops first in the embryo?

Correct AnswerverifiedShow Answer

The cardiovascular and urinary systems form from the _______ layer.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following describes the process in which cells become specialized in structure and function?

Correct AnswerverifiedShow Answer

What of the following would NOT be a method that would prevent one species' sperm from fertilizing another species' egg?

Correct AnswerverifiedShow Answer

The sac that surrounds the fetus and usually ruptures just before childbirth is the

Correct AnswerverifiedShow Answer

Which statement is NOT correct about the placenta?

Correct AnswerverifiedShow Answer

The formation of the lens of the vertebrate eye from a skin layer in contact with an outgrowth of the embryonic brain is an example of

Correct AnswerverifiedShow Answer

The process in which neighboring cells influence the development of each other,either by direct contact or by production of chemical signals,is

Correct AnswerverifiedShow Answer

Which one of the following is NOT derived from endoderm?

Correct AnswerverifiedShow Answer

The last tissue layer to be formed during gastrulation is the

Correct AnswerverifiedShow Answer

As aging occurs changes are seen in the function of body systems,among these changes are all but which of the following?

Correct AnswerverifiedShow Answer

The allantoic blood vessels

Correct AnswerverifiedShow Answer

Which of the following ducts connect the pulmonary trunk to the aorta in the fetus?

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

Milk production is triggered in breasts following several days of ____ production by the ____.

Correct AnswerverifiedShow Answer

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Milk production is triggered in breasts following several days of production by the .

Correct Answer
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