Question 1

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 2

Pulling to a standing position is a typical milestone for which age?

Accepted Answer

A)  6 weeks 
B)  6 months 
C)  12 weeks 
D)  12 months 
E)  18 weeks 
A)  6 weeks 
B)  6 months 
C)  12 weeks 
D)  12 months 
E)  18 weeks

Question 3

Once the embryonic mass has 12 or more cells, it is called a

Accepted Answer

A)  morula. 
B)  gastrula. 
C)  blastula. 
D)  blastocyst. 
E)  trophoblast. 
A)  morula. 
B)  gastrula. 
C)  blastula. 
D)  blastocyst. 
E)  trophoblast.

Question 4

What genetic disorder is the failure to produce clotting factors?

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 5

Genes that are passed from male to male are called

Accepted Answer

A)  structural genes. 
B)  autosomes. 
C)  genotypes. 
D)  polygenic. 
E)  y-linked. 
A)  structural genes. 
B)  autosomes. 
C)  genotypes. 
D)  polygenic. 
E)  y-linked.

Question 6

A display of the chromosomes of a somatic cell during metaphase of mitosis is the

Accepted Answer

A)  karyotype. 
B)  autosome. 
C)  homolog. 
D)  locus. 
E)  genome. 
A)  karyotype. 
B)  autosome. 
C)  homolog. 
D)  locus. 
E)  genome.

Question 7

The embryonic heart

Accepted Answer

A)  develops from two endothelial tubes that fuse together. 
B)  consists of four chambers. 
C)  has two atria but only one ventricle. 
D)  doesn't beat until just prior to birth. 
E)  has no passages connecting right side to left side. 
A)  develops from two endothelial tubes that fuse together. 
B)  consists of four chambers. 
C)  has two atria but only one ventricle. 
D)  doesn't beat until just prior to birth. 
E)  has no passages connecting right side to left side.

Question 8

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.

Question 9

An infant born with a gestational age of 254 days would be considered

Accepted Answer

A)  premature. 
B)  normal maturity. 
C)  postmature. 
D)  immature. 
E)  None of these choices is correct. 
A)  premature. 
B)  normal maturity. 
C)  postmature. 
D)  immature. 
E)  None of these choices is correct.

Question 10

In males, the urogenital folds close over the urogenital opening and urethral groove to form the

Accepted Answer

A)  scrotum. 
B)  testes. 
C)  vas deferens. 
D)  penis. 
E)  prostate gland. 
A)  scrotum. 
B)  testes. 
C)  vas deferens. 
D)  penis. 
E)  prostate gland.

Question 11

What genetic disorder is a type of dwarfism characterized by shortening of the upper and lower limbs?

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 12

The single layer of cells that surrounds the blastocele is the

Accepted Answer

A)  morula. 
B)  gastrula. 
C)  blastocyst. 
D)  trophoblast. 
E)  inner cell mass. 
A)  morula. 
B)  gastrula. 
C)  blastocyst. 
D)  trophoblast. 
E)  inner cell mass.

Question 13

The time period between fertilization and implantation is approximately

Accepted Answer

A)  5 days. 
B)  7 days. 
C)  10 days. 
D)  14 days. 
E)  21 days. 
A)  5 days. 
B)  7 days. 
C)  10 days. 
D)  14 days. 
E)  21 days.

Question 14

Which germ layer is most muscle derived from?

Accepted Answer

A)  ectoderm 
B)  mesoderm 
C)  endoderm 
A)  ectoderm 
B)  mesoderm 
C)  endoderm

Question 15

What type of gene expression are the ABO blood types an example of?

Accepted Answer

A)  complete dominance 
B)  codominance 
C)  incomplete dominance 
D)  recessiveness 
E)  polymorphism 
A)  complete dominance 
B)  codominance 
C)  incomplete dominance 
D)  recessiveness 
E)  polymorphism

Question 16

Arrange the following in the sequence in which they form in the embryo. (1) neural plate
(2) neural tube
(3) notochord
(4) primitive streak

Accepted Answer

A)  1, 2, 3, 4 
B)  1, 3, 2, 4 
C)  4, 3, 1, 2 
D)  4, 1, 3, 2 
E)  3, 4, 1, 2 
A)  1, 2, 3, 4 
B)  1, 3, 2, 4 
C)  4, 3, 1, 2 
D)  4, 1, 3, 2 
E)  3, 4, 1, 2

Question 17

Which of the following statements concerning the digestive system of a newborn is true?

Accepted Answer

A)  The infant may lose 15% to 20% of his body weight in the first week. 
B)  The pH of the stomach is nearly neutral, but increases in acidity after birth. 
C)  The liver of the newborn is functionally mature. 
D)  The ability to digest lactose does not occur until 48 hours after birth. 
E)  All foods can be digested at birth. 
A)  The infant may lose 15% to 20% of his body weight in the first week. 
B)  The pH of the stomach is nearly neutral, but increases in acidity after birth. 
C)  The liver of the newborn is functionally mature. 
D)  The ability to digest lactose does not occur until 48 hours after birth. 
E)  All foods can be digested at birth.

Question 18

Which of the following organs develops from evaginations along the early digestive tract?

Accepted Answer

A)  heart 
B)  adrenal medulla 
C)  lungs 
D)  nasal cavity 
E)  kidneys 
A)  heart 
B)  adrenal medulla 
C)  lungs 
D)  nasal cavity 
E)  kidneys

Question 19

In the context of western medicine, the definition of death is different from that among poorer people with only low levels of medical care.
One criterion of death is an isoelectric response of an electroencephalogram for ____ minutes.
The ethics of tissue and organ donatio demand that multiple criteria be met before someone is
declared to be dead. The most widely accepted
definition of death is_______.

Accepted Answer

A) True 
 B)False

Question 20

The major difference between an embryo and a fetus is that

Accepted Answer

A)  a fetus can survive outside the mother's womb but an embryo cannot. 
B)  a fetus is smaller than an embryo. 
C)  organ systems are developing in an embryo while all organs are present in a fetus. 
D)  a fetus is a male child while an embryo is a female child. 
E)  None of these choices is correct. 
A)  a fetus can survive outside the mother's womb but an embryo cannot. 
B)  a fetus is smaller than an embryo. 
C)  organ systems are developing in an embryo while all organs are present in a fetus. 
D)  a fetus is a male child while an embryo is a female child. 
E)  None of these choices is correct.

Exam 29: Development, Growth, Aging, and Genetics

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

Pulling to a standing position is a typical milestone for which age?

Once the embryonic mass has 12 or more cells, it is called a

What genetic disorder is the failure to produce clotting factors?

Genes that are passed from male to male are called

A display of the chromosomes of a somatic cell during metaphase of mitosis is the

The embryonic heart

Segments of mesoderm that will form muscles are

An infant born with a gestational age of 254 days would be considered

In males, the urogenital folds close over the urogenital opening and urethral groove to form the

What genetic disorder is a type of dwarfism characterized by shortening of the upper and lower limbs?

The single layer of cells that surrounds the blastocele is the

The time period between fertilization and implantation is approximately

Which germ layer is most muscle derived from?

What type of gene expression are the ABO blood types an example of?

Arrange the following in the sequence in which they form in the embryo. (1) neural plate (2) neural tube (3) notochord (4) primitive streak

Which of the following statements concerning the digestive system of a newborn is true?

Which of the following organs develops from evaginations along the early digestive tract?

The major difference between an embryo and a fetus is that

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, Electrolyte, and Acid-Based Balance

Reproductive System

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