Question 1

The cytotrophoblast

Accepted Answer

A)  forms the chorionic villi. 
B)  replaces the syncytiotrophoblast. 
C)  remains throughout development. 
D)  forms branches that protrude into the amniotic cavity. 
E)  is not an embryonic part of the placenta. 
A)  forms the chorionic villi. 
B)  replaces the syncytiotrophoblast. 
C)  remains throughout development. 
D)  forms branches that protrude into the amniotic cavity. 
E)  is not an embryonic part of the placenta.

Question 2

An embryonic cell that has the potential to develop into a wide range of tissues is called a/an

Accepted Answer

A)  differentiated cell. 
B)  multipotent cell. 
C)  pluripotent cell. 
D)  omnipotent cell. 
E)  totipotent cell. 
A)  differentiated cell. 
B)  multipotent cell. 
C)  pluripotent cell. 
D)  omnipotent cell. 
E)  totipotent cell.

Question 3

Which of the following statements about the syncytiotrophoblast is false?

Accepted Answer

A)  It forms the developing embryo. 
B)  It is composed of a non-dividing, multinucleated cell. 
C)  It is nonantigenic, so that it triggers no immune response. 
D)  It invades the maternal tissues that compose the endometrium of the uterus. 
E)  It forms lacunae. 
A)  It forms the developing embryo. 
B)  It is composed of a non-dividing, multinucleated cell. 
C)  It is nonantigenic, so that it triggers no immune response. 
D)  It invades the maternal tissues that compose the endometrium of the uterus. 
E)  It forms lacunae.

Question 4

-What does "C" represent on the diagram?

Accepted Answer

A)  fertilization 
B)  morula 
C)  blastocyst 
D)  implantation 
E)  ovulation 
A)  fertilization 
B)  morula 
C)  blastocyst 
D)  implantation 
E)  ovulation

Question 5

Which of the following will cause contractions of uterine smooth muscle?

Accepted Answer

A)  increasing levels of progesterone 
B)  decreasing levels of estrogen 
C)  decreasing levels of oxytocin 
D)  decreasing uterine stretch 
E)  increasing levels of oxytocin 
A)  increasing levels of progesterone 
B)  decreasing levels of estrogen 
C)  decreasing levels of oxytocin 
D)  decreasing uterine stretch 
E)  increasing levels of oxytocin

Question 6

Which of the following statements concerning musculoskeletal system development is true?

Accepted Answer

A)  Skeletal muscles develop from crest cells. 
B)  Myoblasts produce somites. 
C)  The vertebral column develops from somite-derived mesoderm. 
D)  Enlargement of muscles after birth is due to an increase in the number of muscle fibers. 
E)  Ossification ends before birth. 
A)  Skeletal muscles develop from crest cells. 
B)  Myoblasts produce somites. 
C)  The vertebral column develops from somite-derived mesoderm. 
D)  Enlargement of muscles after birth is due to an increase in the number of muscle fibers. 
E)  Ossification ends before birth.

Question 7

Alcohol ingestion by a pregnant woman can cause birth defects in her baby; alcohol is a(an)

Accepted Answer

A)  carcinogen. 
B)  mutagen. 
C)  teratogen. 
D)  oncogene. 
E)  haptogen. 
A)  carcinogen. 
B)  mutagen. 
C)  teratogen. 
D)  oncogene. 
E)  haptogen.

Question 8

What term means that both alleles are the same?

Accepted Answer

A)  locus 
B)  alleles 
C)  homozygous 
D)  heterozygous 
E)  karyotype 
A)  locus 
B)  alleles 
C)  homozygous 
D)  heterozygous 
E)  karyotype

Question 9

The period from conception until birth is

Accepted Answer

A)  the prenatal period. 
B)  the germinal period. 
C)  the embryonic period. 
D)  the fetal period. 
E)  the conceptual period. 
A)  the prenatal period. 
B)  the germinal period. 
C)  the embryonic period. 
D)  the fetal period. 
E)  the conceptual period.

Question 10

In fetal circulation, the blood containing the highest amount of oxygen is found in the

Accepted Answer

A)  aorta. 
B)  umbilical vein. 
C)  ductus arteriosus. 
D)  umbilical arteries. 
E)  heart. 
A)  aorta. 
B)  umbilical vein. 
C)  ductus arteriosus. 
D)  umbilical arteries. 
E)  heart.

Question 11

An embryonic cell that contains the potential to give rise to any tissue type is called a/an

Accepted Answer

A)  differentiated cell. 
B)  multipotent cell. 
C)  pluripotent cell. 
D)  omnipotent cell. 
E)  totipotent cell. 
A)  differentiated cell. 
B)  multipotent cell. 
C)  pluripotent cell. 
D)  omnipotent cell. 
E)  totipotent cell.

Question 12

APGAR scores are used to

Accepted Answer

A)  evaluate a newborn's weight. 
B)  assess a newborn's physiological condition. 
C)  measure a newborn's genetic state. 
D)  determine the developmental age of the infant. 
E)  measure the infant. 
A)  evaluate a newborn's weight. 
B)  assess a newborn's physiological condition. 
C)  measure a newborn's genetic state. 
D)  determine the developmental age of the infant. 
E)  measure the infant.

Question 13

If the zygote splits into two separate cells,

Accepted Answer

A)  identical twins result. 
B)  fraternal twins result. 
C)  dizygotic twinning occurs. 
D)  both cells die. 
E)  paternal twins result. 
A)  identical twins result. 
B)  fraternal twins result. 
C)  dizygotic twinning occurs. 
D)  both cells die. 
E)  paternal twins result.

Question 14

The process of meiosis will _____ as the gametes are produced.

Accepted Answer

A)  cut the chromosome number by 1/3 
B)  cut the chromosome number by 1/2 
C)  double the chromosome number 
D)  not change the chromosome number 
E)  triple the chromosome number 
A)  cut the chromosome number by 1/3 
B)  cut the chromosome number by 1/2 
C)  double the chromosome number 
D)  not change the chromosome number 
E)  triple the chromosome number

Question 15

The hormone responsible for milk production is

Accepted Answer

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

Question 16

What genetic disorder is characterized by lack of skin, hair, eye coloration?

Accepted Answer

A)  albinism 
B)  sickle-cell disease 
C)  hemophilia 
D)  Down syndrome 
E)  achondroplasia 
A)  albinism 
B)  sickle-cell disease 
C)  hemophilia 
D)  Down syndrome 
E)  achondroplasia

Question 17

-What does "E" represent on the diagram?

Accepted Answer

A)  fertilization 
B)  morula 
C)  blastocyst 
D)  implantation 
E)  ovulation 
A)  fertilization 
B)  morula 
C)  blastocyst 
D)  implantation 
E)  ovulation

Question 18

The clinical age of the unborn child is calculated from

Accepted Answer

A)  ovulation. 
B)  conception. 
C)  the last menstrual period. 
D)  fourteen days after the last menstrual period. 
E)  fourteen days before the last menstrual period. 
A)  ovulation. 
B)  conception. 
C)  the last menstrual period. 
D)  fourteen days after the last menstrual period. 
E)  fourteen days before the last menstrual period.

Question 19

Which of the following is an example of incomplete dominance?

Accepted Answer

A)  minor thalassemia 
B)  major thalassemia 
C)  beta thalassemia 
D)  polymorphism 
E)  ABO blood groups 
A)  minor thalassemia 
B)  major thalassemia 
C)  beta thalassemia 
D)  polymorphism 
E)  ABO blood groups

Question 20

Segments of mesoderm that will form muscles are

Accepted Answer

A)  mesonephros. 
B)  mandibular processes. 
C)  neural tube. 
D)  secondary palate. 
E)  somites. 
A)  mesonephros. 
B)  mandibular processes. 
C)  neural tube. 
D)  secondary palate. 
E)  somites.

Exam 29: Development, Growth, Aging, and Genetics

The cytotrophoblast

An embryonic cell that has the potential to develop into a wide range of tissues is called a/an

Which of the following statements about the syncytiotrophoblast is false?

-What does "C" represent on the diagram?

Which of the following will cause contractions of uterine smooth muscle?

Which of the following statements concerning musculoskeletal system development is true?

Alcohol ingestion by a pregnant woman can cause birth defects in her baby; alcohol is a(an)

What term means that both alleles are the same?

The period from conception until birth is

In fetal circulation, the blood containing the highest amount of oxygen is found in the

An embryonic cell that contains the potential to give rise to any tissue type is called a/an

APGAR scores are used to

If the zygote splits into two separate cells,

The process of meiosis will _____ as the gametes are produced.

The hormone responsible for milk production is

What genetic disorder is characterized by lack of skin, hair, eye coloration?

-What does "E" represent on the diagram?

The clinical age of the unborn child is calculated from

Which of the following is an example of incomplete dominance?

Segments of mesoderm that will form muscles are

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolytes, and Acidbase Balance

Reproductive System

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