Question 1

Implantation occurs approximately

Accepted Answer

A)  one day after fertilization. 
B)  three days after fertilization. 
C)  one week after fertilization. 
D)  two weeks after fertilization. 
E)  one month after fertilization. 
A)  one day after fertilization. 
B)  three days after fertilization. 
C)  one week after fertilization. 
D)  two weeks after fertilization. 
E)  one month after fertilization. C

Question 2

A pregnant woman who smokes risks

Accepted Answer

A)  delivering an underweight baby. 
B)  a greater chance of miscarriage. 
C)  a greater chance of stillbirth. 
D)  a greater chance of premature delivery. 
E)  all of these. 
A)  delivering an underweight baby. 
B)  a greater chance of miscarriage. 
C)  a greater chance of stillbirth. 
D)  a greater chance of premature delivery. 
E)  all of these. E

Question 3

In the following list of developmental events, which occurs last?

Accepted Answer

A)  tissue specialization 
B)  gamete formation 
C)  gastrulation 
D)  cleavage 
E)  organ formation 
A)  tissue specialization 
B)  gamete formation 
C)  gastrulation 
D)  cleavage 
E)  organ formation A

Question 4

An embryo develops from the

Accepted Answer

A)  blastomere. 
B)  gastrula. 
C)  syncytiotrophoblast. 
D)  trophoblast. 
E)  inner cell mass. 
A)  blastomere. 
B)  gastrula. 
C)  syncytiotrophoblast. 
D)  trophoblast. 
E)  inner cell mass.

Question 5

An agent that can cause birth defects is known as a(n)

Accepted Answer

A)  teratogen. 
B)  mutagen. 
C)  carcinogen. 
D)  haptene. 
E)  allergen. 
A)  teratogen. 
B)  mutagen. 
C)  carcinogen. 
D)  haptene. 
E)  allergen.

Question 6

When does a zygote become a multicellular creature?

Accepted Answer

A)  at fertilization 
B)  when cleavage begins 
C)  when organs begin to form 
D)  when the heart begins beating 
E)  at birth 
A)  at fertilization 
B)  when cleavage begins 
C)  when organs begin to form 
D)  when the heart begins beating 
E)  at birth

Question 7

The embryonic period ends by which week of pregnancy?

Accepted Answer

A)  eighth 
B)  twelfth 
C)  sixteenth 
D)  twentieth 
E)  twenty-fourth 
A)  eighth 
B)  twelfth 
C)  sixteenth 
D)  twentieth 
E)  twenty-fourth

Question 8

An embryo with one X and one Y chromosome will develop male characters because of

Accepted Answer

A)  the presence of female hormones in development. 
B)  the absence of testosterone during early embryology. 
C)  the SRY regions of the Y chromosome. 
D)  maternal substances passed to the zygote during fertilization. 
E)  human chorionic gonadotropin. 
A)  the presence of female hormones in development. 
B)  the absence of testosterone during early embryology. 
C)  the SRY regions of the Y chromosome. 
D)  maternal substances passed to the zygote during fertilization. 
E)  human chorionic gonadotropin.

Question 9

The female hormones that participate in milk production for the newborn are

Accepted Answer

A)  prolactin and oxytocin. 
B)  prolactin and estrogen. 
C)  prolactin and progesterone. 
D)  oxytocin and estrogen. 
E)  oxytocin and progesterone. 
A)  prolactin and oxytocin. 
B)  prolactin and estrogen. 
C)  prolactin and progesterone. 
D)  oxytocin and estrogen. 
E)  oxytocin and progesterone.

Question 10

The cavity between the body wall and the digestive tract is the

Accepted Answer

A)  coelom. 
B)  peritoneum. 
C)  cecum. 
D)  rectum. 
E)  blastocoel. 
A)  coelom. 
B)  peritoneum. 
C)  cecum. 
D)  rectum. 
E)  blastocoel.

Question 11

After birth, which hormone causes the uterus to "shrink" and also causes the mother's breast tissue to contract forcing milk into the ducts?

Accepted Answer

A)  estrogen 
B)  prolactin 
C)  progesterone 
D)  oxytocin 
E)  hCG 
A)  estrogen 
B)  prolactin 
C)  progesterone 
D)  oxytocin 
E)  hCG

Question 12

The fact that a blastocyst has been implanted on the uterine wall can be demonstrated by the presence of

Accepted Answer

A)  human chorionic gonadotropin. 
B)  progesterone. 
C)  estrogen. 
D)  testosterone. 
E)  second polar body. 
A)  human chorionic gonadotropin. 
B)  progesterone. 
C)  estrogen. 
D)  testosterone. 
E)  second polar body.

Question 13

The link between mother and embryo through which nutrition, oxygen, and wastes pass is the

Accepted Answer

A)  chorion. 
B)  placenta. 
C)  amnion. 
D)  yolk sac. 
E)  allantois. 
A)  chorion. 
B)  placenta. 
C)  amnion. 
D)  yolk sac. 
E)  allantois.

Question 14

The first several cleavages after fertilization occur in the

Accepted Answer

A)  uterus. 
B)  ovary. 
C)  vagina. 
D)  oviduct. 
E)  cervix. 
A)  uterus. 
B)  ovary. 
C)  vagina. 
D)  oviduct. 
E)  cervix.

Question 15

Implantation of the embryo occurs in the

Accepted Answer

A)  ovary. 
B)  uterus. 
C)  vagina. 
D)  oviduct. 
E)  follicle. 
A)  ovary. 
B)  uterus. 
C)  vagina. 
D)  oviduct. 
E)  follicle.

Question 16

In the human, which of the following events would occur over the longest period of time?

Accepted Answer

A)  sperm production 
B)  cleavage 
C)  fertilization 
D)  gastrulation 
E)  growth and tissue specialization 
A)  sperm production 
B)  cleavage 
C)  fertilization 
D)  gastrulation 
E)  growth and tissue specialization

Question 17

The cheesy coating that prevents the fetus' skin from chafing is called

Accepted Answer

A)  vernix caseosa. 
B)  fossa ovalis. 
C)  chorionic villus. 
D)  lanugo. 
E)  colostrum. 
A)  vernix caseosa. 
B)  fossa ovalis. 
C)  chorionic villus. 
D)  lanugo. 
E)  colostrum.

Question 18

What is the name given to the opening that allows blood to flow from the right atrium directly into the left atrium of the fetal heart?

Accepted Answer

A)  ductus arteriosus 
B)  foramen ovale 
C)  vernix caseosa 
D)  ductus venosus 
E)  lanugo 
A)  ductus arteriosus 
B)  foramen ovale 
C)  vernix caseosa 
D)  ductus venosus 
E)  lanugo

Question 19

Human chorionic gonadotropin stimulates the corpus luteum to secrete

Accepted Answer

A)  FSH. 
B)  LH. 
C)  testosterone. 
D)  progesterone. 
E)  estrogen and progesterone. 
A)  FSH. 
B)  LH. 
C)  testosterone. 
D)  progesterone. 
E)  estrogen and progesterone.

Question 20

The direct visualization of a developing fetus to diagnose disorders is called

Accepted Answer

A)  chorionic villus sampling. 
B)  preimplantation diagnosis. 
C)  amniocentesis. 
D)  fetoscopy. 
E)  senescence. 
A)  chorionic villus sampling. 
B)  preimplantation diagnosis. 
C)  amniocentesis. 
D)  fetoscopy. 
E)  senescence.

Exam 17: Development and Aging

Implantation occurs approximately

A pregnant woman who smokes risks

In the following list of developmental events, which occurs last?

An embryo develops from the

An agent that can cause birth defects is known as a(n)

When does a zygote become a multicellular creature?

The embryonic period ends by which week of pregnancy?

An embryo with one X and one Y chromosome will develop male characters because of

The female hormones that participate in milk production for the newborn are

The cavity between the body wall and the digestive tract is the

After birth, which hormone causes the uterus to "shrink" and also causes the mother's breast tissue to contract forcing milk into the ducts?

The fact that a blastocyst has been implanted on the uterine wall can be demonstrated by the presence of

The link between mother and embryo through which nutrition, oxygen, and wastes pass is the

The first several cleavages after fertilization occur in the

Implantation of the embryo occurs in the

In the human, which of the following events would occur over the longest period of time?

The cheesy coating that prevents the fetus' skin from chafing is called

What is the name given to the opening that allows blood to flow from the right atrium directly into the left atrium of the fetal heart?

Human chorionic gonadotropin stimulates the corpus luteum to secrete

The direct visualization of a developing fetus to diagnose disorders is called

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

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