Question 1

Typically, at the moment a full-term baby is born, the child's lungs are

Accepted Answer

A)   fully inflated due to practice respiratory movements in the womb.
B)   not fully inflated, but they will inflate within about ten seconds.
C)   not fully inflated, and will not inflate fully for ten days, when surfactant production begins.D) None of the above
E) All of the above

Question 2

The outer layer of the trophoblast that burrows into the lining of the uterus is the

Accepted Answer

A)   embryoblast.
B)   syncytiotrophoblast.
C)   cytotrophoblast.
D)   morula.
E)   zona pellucida.F) A) and C)
G) C) and D)

Question 3

An alternate term for labor is ________.

Accepted Answer

The answer of An alternate term for labor is ________....

Question 4

Neonates will take their first breath only after umbilical cord vessels have been clamped.

Accepted Answer

A) True 
 B)False

Question 5

Progesterone makes the uterine myometrium more irritable.

Accepted Answer

A) True 
 B)False

Question 6

Capacitation lasts several ________ and involves removal of ________.

Accepted Answer

A)   seconds; lipids from the surface of the egg
B)   hours; proteins from the surface of the sperm
C)   days; carbohydrates from the surface of the egg
D)   weeks; glycolipids from the surface of the spermE) C) and D)
F) A) and B)

Question 7

Cephalocaudal folding occurs because of the rapid growth of the

Accepted Answer

A)   amnion and embryonic disc.
B)   yolk sac.C) A) and B)
D) undefined

Question 8

Which stage would you expect to take the longest time?

Accepted Answer

A)   Dilation stage of labor of a parous woman
B)   Dilation stage of labor of a nulliparous woman
C)   Expulsion stage of labor of a parous woman
D)   Expulsion stage of labor of a nulliparous womanE) A) and B)
F) B) and D)

Question 9

Shortly after birth the pressure within the right side of the heart rises.

Accepted Answer

A) True 
 B)False

Question 10

Breastfeeding prolongs the duration of time it takes for the uterus to shrink to its pre-pregnancy size.

Accepted Answer

A) True 
 B)False

Question 11

Teratogens are most damaging to organ systems if exposure to them occurs

Accepted Answer

A)   early in pre-embryonic development.
B)   when the organ systems are undergoing peak development in the embryo.
C)   in the fetal period, after systems have formed but have not completed maturation.D) A) and C)
E) B) and C)

Question 12

Late in pregnancy, levels of estrogen and oxytocin rise.

Accepted Answer

A) True 
 B)False

Question 13

Shortly after birth, the foramen ovale of the fetal heart ceases to function as an open pathway for blood.

Accepted Answer

A) True 
 B)False

Question 14

In nonpregnant women, ________ inhibits secretion of substantial amounts of prolactin.

Accepted Answer

A)   GnRH
B)   dopamine
C)   estrogen
D)   progesteroneE) C) and D)
F) A) and B)

Question 15

Fertilization typically occurs in the ________, and it restores the ________ number of chromosomes.

Accepted Answer

A)   ampulla of the uterine tube; haploid
B)   ampulla of the uterine tube; diploid
C)   body of the uterus; polyploid
D)   isthmus of the uterine tube; haploid
E)   isthmus of the uterine tube; polyploidF) All of the above
G) A) and E)

Question 16

The outermost extraembryonic membrane that eventually helps form the placenta is the

Accepted Answer

A)   amnion.
B)   chorion.
C)   yolk sac.
D)   hypoblast.E) All of the above
F) A) and C)

Question 17

The process that involves the fusion of the two sides of the embryonic disc at a newly formed midline, thereby creating a cylindrical embryo is ________ folding.

Accepted Answer

A)   invagination
B)   cephalocaudal
C)   transverse
D)   amphiamniotic
E)   coronalF) A) and B)
G) B) and E)

Question 18

Explain the feedback mechanism involved in true labor. Indicate the components of the feedback system (for example, identify the control center), their responses to stimuli, and the nature of the response (is it positive or negative feedback?).

Accepted Answer

Labor involves a positive feedback cycle...

Question 19

By the 4th month of pregnancy, the fundus of the uterus is located inches below the ________ and by the ninth month it is located at the level of the ________.

Accepted Answer

A)   urinary bladder; umbilicus
B)   umbilicus; xiphoid process
C)   diaphragm; laryngeal prominence
D)   pubic symphysis; heartE) A) and B)
F) A) and C)

Question 20

Mendelian inheritance specifies that if two heterozygous individuals mate, the chances that a child would be homozygous for the recessive allele would be

Accepted Answer

A)   25%.
B)   50%.
C)   75%.
D)   impossible to predict.E) A) and B)
F) A) and C)

Exam 29: Development, Pregnancy, and Heredity

Neonates will take their first breath only after umbilical cord vessels have been clamped.

Correct AnswerverifiedShow Answer

The outer layer of the trophoblast that burrows into the lining of the uterus is the

Correct AnswerverifiedShow Answer

Typically, at the moment a full-term baby is born, the child's lungs are

Correct AnswerverifiedShow Answer

Fertilization typically occurs in the ________, and it restores the ________ number of chromosomes.

Correct AnswerverifiedShow Answer

Cephalocaudal folding occurs because of the rapid growth of the

Correct AnswerverifiedShow Answer

Which stage would you expect to take the longest time?

Correct AnswerverifiedShow Answer

The process that involves the fusion of the two sides of the embryonic disc at a newly formed midline, thereby creating a cylindrical embryo is ________ folding.

Correct AnswerverifiedShow Answer

The outermost extraembryonic membrane that eventually helps form the placenta is the

Correct AnswerverifiedShow Answer

Shortly after birth, the foramen ovale of the fetal heart ceases to function as an open pathway for blood.

Correct AnswerverifiedShow Answer

In nonpregnant women, ________ inhibits secretion of substantial amounts of prolactin.

Correct AnswerverifiedShow Answer

An alternate term for labor is ________.

Correct AnswerverifiedShow Answer

Capacitation lasts several ________ and involves removal of ________.

Correct AnswerverifiedShow Answer

Late in pregnancy, levels of estrogen and oxytocin rise.

Correct AnswerverifiedShow Answer

Shortly after birth the pressure within the right side of the heart rises.

Correct AnswerverifiedShow Answer

Teratogens are most damaging to organ systems if exposure to them occurs

Correct AnswerverifiedShow Answer

Mendelian inheritance specifies that if two heterozygous individuals mate, the chances that a child would be homozygous for the recessive allele would be

Correct AnswerverifiedShow Answer

Progesterone makes the uterine myometrium more irritable.

Correct AnswerverifiedShow Answer

Explain the feedback mechanism involved in true labor. Indicate the components of the feedback system (for example, identify the control center), their responses to stimuli, and the nature of the response (is it positive or negative feedback?).

Correct AnswerverifiedLabor involves a positive feedback cycle...View AnswerShow Answer

Breastfeeding prolongs the duration of time it takes for the uterus to shrink to its pre-pregnancy size.

Correct AnswerverifiedShow Answer

By the 4th month of pregnancy, the fundus of the uterus is located inches below the ________ and by the ninth month it is located at the level of the ________.

Correct AnswerverifiedShow Answer

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Fertilization typically occurs in the , and it restores the number of chromosomes.

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Capacitation lasts several and involves removal of .

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Labor involves a positive feedback cycle...
View Answer

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By the 4th month of pregnancy, the fundus of the uterus is located inches below the and by the ninth month it is located at the level of the .

Correct Answer
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