Question 1

Under the influence of the trophoblast, maternal blood vessels in the endometrium

Accepted Answer

A)  disappear. 
B)  attach to the inner cell mass. 
C)  break down and form sinuses or lacunae. 
D)  form a capillary network in the trophoblast. 
E)  increase in size and penetrate the blastocyst. 
A)  disappear. 
B)  attach to the inner cell mass. 
C)  break down and form sinuses or lacunae. 
D)  form a capillary network in the trophoblast. 
E)  increase in size and penetrate the blastocyst.

Question 2

In-Text Figure Based Questions
-What hormones stimulate and increase the excitability of the myometrium? (Figure 29-10)

Accepted Answer

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

Question 3

The human gestation period consists of

Accepted Answer

A)  fertilization and one trimester. 
B)  two trimesters of 1 month each. 
C)  three trimesters of 1 month each. 
D)  two trimesters of 2 months each. 
E)  three trimesters of 3 months each. 
A)  fertilization and one trimester. 
B)  two trimesters of 1 month each. 
C)  three trimesters of 1 month each. 
D)  two trimesters of 2 months each. 
E)  three trimesters of 3 months each.

Question 4

During early development, the Y chromosome produces a substance called "testis determining factor" (TDF)that causes the indifferent gonad to become a testis. This would be an example of

Accepted Answer

A)  capacitation. 
B)  activation. 
C)  differentiation. 
D)  induction. 
E)  predilection. 
A)  capacitation. 
B)  activation. 
C)  differentiation. 
D)  induction. 
E)  predilection.

Question 5

The period of gestation that is characterized by rapid fetal growth and fat deposition is the ________ trimester.

Accepted Answer

A)  first 
B)  second 
C)  third 
A)  first 
B)  second 
C)  third

Question 6

Sperm cannot fertilize an oocyte until they

Accepted Answer

A)  undergo capacitation. 
B)  undergo meiosis. 
C)  lose their flagellum. 
D)  are in the vagina for 3 days. 
E)  are activated by sustentacular cells of the vagina. 
A)  undergo capacitation. 
B)  undergo meiosis. 
C)  lose their flagellum. 
D)  are in the vagina for 3 days. 
E)  are activated by sustentacular cells of the vagina.

Question 7

The 23rd set of chromosomes determines

Accepted Answer

A)  characteristics of the brain. 
B)  sex. 
C)  body characteristics. 
D)  blood type. 
E)  sex drive. 
A)  characteristics of the brain. 
B)  sex. 
C)  body characteristics. 
D)  blood type. 
E)  sex drive.

Question 8

Figure 29-2 Fetus at 10 Weeks
  
Use Figure 29-2 to answer the following questions:
-Identify the structure labeled "3."

Accepted Answer

A)  umbilical cord 
B)  placenta 
C)  basal decidua 
D)  capsular decidua 
E)  yolk sac 
A)  umbilical cord 
B)  placenta 
C)  basal decidua 
D)  capsular decidua 
E)  yolk sac

Question 9

The separation between the inner cell mass and the trophoblast forms a fluid-filled chamber called the

Accepted Answer

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

Question 10

The transfer of genetically determined characteristics from generation to generation is termed

Accepted Answer

A)  development. 
B)  differentiation. 
C)  inheritance. 
D)  phylogeny. 
E)  maturity. 
A)  development. 
B)  differentiation. 
C)  inheritance. 
D)  phylogeny. 
E)  maturity.

Question 11

Which of the following is not one of the extraembryonic membranes?

Accepted Answer

A)  yolk sac 
B)  amnion 
C)  allantois 
D)  chorion 
E)  umbilical cord 
A)  yolk sac 
B)  amnion 
C)  allantois 
D)  chorion 
E)  umbilical cord

Question 12

In a(n) ________, an incision is made in the perineal musculature.

Accepted Answer

A)  episiotomy 
B)  lumbar puncture 
C)  crowning 
D)  epidural 
E)  peritoneal cut 
A)  episiotomy 
B)  lumbar puncture 
C)  crowning 
D)  epidural 
E)  peritoneal cut

Question 13

The hormone that increases the flexibility of the pubic symphysis during pregnancy is

Accepted Answer

A)  luteinizing hormone. 
B)  progesterone. 
C)  human chorionic gonadotropin. 
D)  human placental lactogen. 
E)  relaxin. 
A)  luteinizing hormone. 
B)  progesterone. 
C)  human chorionic gonadotropin. 
D)  human placental lactogen. 
E)  relaxin.

Question 14

Twins that occur when blastomeres separate are called

Accepted Answer

A)  monozygotic. 
B)  blastulatory. 
C)  zygoblastic. 
D)  dizygotic. 
E)  fraternal. 
A)  monozygotic. 
B)  blastulatory. 
C)  zygoblastic. 
D)  dizygotic. 
E)  fraternal.

Question 15

The placenta is a source of all of the following hormones, except

Accepted Answer

A)  hCG. 
B)  relaxin. 
C)  placental lactogen. 
D)  progesterone. 
E)  luteinizing hormone. 
A)  hCG. 
B)  relaxin. 
C)  placental lactogen. 
D)  progesterone. 
E)  luteinizing hormone.

Question 16

The site where fertilization normally occurs is in the

Accepted Answer

A)  cervix. 
B)  fimbrae. 
C)  uterine wall near the fundus. 
D)  outer one-third of the uterine tube. 
E)  union of the vagina and uterus. 
A)  cervix. 
B)  fimbrae. 
C)  uterine wall near the fundus. 
D)  outer one-third of the uterine tube. 
E)  union of the vagina and uterus.

Question 17

An infant born ________ prematurely has a good chance of survival.

Accepted Answer

A)  1.5 months 
B)  3 months 
C)  4 months 
D)  5 months 
E)  6 months 
A)  1.5 months 
B)  3 months 
C)  4 months 
D)  5 months 
E)  6 months

Question 18

A ________ allele is expressed only when homozygous.

Accepted Answer

A)  homologous 
B)  homocentric 
C)  recessive 
D)  maternal 
E)  dominant 
A)  homologous 
B)  homocentric 
C)  recessive 
D)  maternal 
E)  dominant

Question 19

The endoderm forms

Accepted Answer

A)  muscle. 
B)  blood. 
C)  neural tissue. 
D)  skin. 
E)  the urinary bladder. 
A)  muscle. 
B)  blood. 
C)  neural tissue. 
D)  skin. 
E)  the urinary bladder.

Question 20

The region known as the primitive streak is the site of

Accepted Answer

A)  migration of mesodermal cells to form the endoderm. 
B)  endoderm formation. 
C)  ectoderm formation. 
D)  migration of ectodermal cells to form the mesoderm. 
E)  amnion formation. 
A)  migration of mesodermal cells to form the endoderm. 
B)  endoderm formation. 
C)  ectoderm formation. 
D)  migration of ectodermal cells to form the mesoderm. 
E)  amnion formation.

Exam 29: Development and Inheritance

Under the influence of the trophoblast, maternal blood vessels in the endometrium

In-Text Figure Based Questions -What hormones stimulate and increase the excitability of the myometrium? (Figure 29-10)

The human gestation period consists of

During early development, the Y chromosome produces a substance called "testis determining factor" (TDF)that causes the indifferent gonad to become a testis. This would be an example of

The period of gestation that is characterized by rapid fetal growth and fat deposition is the ________ trimester.

Sperm cannot fertilize an oocyte until they

The 23rd set of chromosomes determines

Figure 29-2 Fetus at 10 Weeks Use Figure 29-2 to answer the following questions: -Identify the structure labeled "3."

The separation between the inner cell mass and the trophoblast forms a fluid-filled chamber called the

The transfer of genetically determined characteristics from generation to generation is termed

Which of the following is not one of the extraembryonic membranes?

In a(n) ________, an incision is made in the perineal musculature.

The hormone that increases the flexibility of the pubic symphysis during pregnancy is

Twins that occur when blastomeres separate are called

The placenta is a source of all of the following hormones, except

The site where fertilization normally occurs is in the

An infant born ________ prematurely has a good chance of survival.

A ________ allele is expressed only when homozygous.

The endoderm forms

The region known as the primitive streak is the site of

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Bones and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Nervous Tissue

The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism, Nutrition, and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

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