Question 1

The central cavity of the neural tube becomes the

Accepted Answer

A)  cerebrum. 
B)  mid-brain. 
C)  cranial cavity. 
D)  ventricles of the brain. 
E)  epidural space. 
A)  cerebrum. 
B)  mid-brain. 
C)  cranial cavity. 
D)  ventricles of the brain. 
E)  epidural space.

Question 2

An organism's genetic makeup is its ____ while its physical appearance is its ____.

Accepted Answer

A)  chromotype; phenotype 
B)  genotype; phenotype 
C)  phenotype; genotype 
D)  genotype; chromotype 
E)  aminotype; prototype 
A)  chromotype; phenotype 
B)  genotype; phenotype 
C)  phenotype; genotype 
D)  genotype; chromotype 
E)  aminotype; prototype

Question 3

The thickened area of the blastocyst from which the embryo develops is called the _______________.

Accepted Answer

A)  inner cell mass 
B)  trophoblast 
C)  blastocele 
D)  morula 
E)  zygote 
A)  inner cell mass 
B)  trophoblast 
C)  blastocele 
D)  morula 
E)  zygote

Question 4

The lungs develop from

Accepted Answer

A)  somitomeres. 
B)  neural crest cells. 
C)  an evagination from the foregut. 
D)  an evagination from the floor of the diencephalon. 
E)  an invagination from the hindgut. 
A)  somitomeres. 
B)  neural crest cells. 
C)  an evagination from the foregut. 
D)  an evagination from the floor of the diencephalon. 
E)  an invagination from the hindgut.

Question 5

Atoms or molecules with unpaired electrons that can react with normal cells and cause damage are called ______.

Accepted Answer

A)  free radicals 
B)  teratogens 
C)  mutagens 
D)  antioxidants 
E)  vitamins 
A)  free radicals 
B)  teratogens 
C)  mutagens 
D)  antioxidants 
E)  vitamins

Question 6

Down Syndrome is an example of an aneuploidy called

Accepted Answer

A)  monosomy 21. 
B)  trisomy 21. 
C)  monosomy 23. 
D)  trisomy 17. 
E)  disomy 21. 
A)  monosomy 21. 
B)  trisomy 21. 
C)  monosomy 23. 
D)  trisomy 17. 
E)  disomy 21.

Question 7

The first functional kidney is the

Accepted Answer

A)  mesonephros. 
B)  pronephros. 
C)  allantois. 
D)  bulbos cordis. 
E)  urorectal septum. 
A)  mesonephros. 
B)  pronephros. 
C)  allantois. 
D)  bulbos cordis. 
E)  urorectal septum.

Question 8

Onset of labor may result from

Accepted Answer

A)  increased estrogen secretion by the placenta. 
B)  increased glucocorticoid secretion by the mother. 
C)  increased secretion of oxytocin by the fetus. 
D)  increased progesterone secretion by the placenta. 
E)  decreased prostaglandins. 
A)  increased estrogen secretion by the placenta. 
B)  increased glucocorticoid secretion by the mother. 
C)  increased secretion of oxytocin by the fetus. 
D)  increased progesterone secretion by the placenta. 
E)  decreased prostaglandins.

Question 9

Where does implantation normally occur?

Accepted Answer

A)  in the fundus area of the uterus 
B)  in the isthmus area of the uterine tube 
C)  in the cervix area of the uterus 
D)  in the infundibulum area of the uterine tube 
A)  in the fundus area of the uterus 
B)  in the isthmus area of the uterine tube 
C)  in the cervix area of the uterus 
D)  in the infundibulum area of the uterine tube

Question 10

Damage to the mesoderm during embryological development would affect the formation of the

Accepted Answer

A)  thyroid. 
B)  brain. 
C)  heart. 
D)  teeth. 
E)  urinary bladder. 
A)  thyroid. 
B)  brain. 
C)  heart. 
D)  teeth. 
E)  urinary bladder.

Question 11

Which of the following fetal shunts bypasses the fetal lungs?

Accepted Answer

A)  ductus arteriosus 
B)  ductus venosus 
C)  umbilical arteries 
D)  umbilical vein 
E)  ductus byosus 
A)  ductus arteriosus 
B)  ductus venosus 
C)  umbilical arteries 
D)  umbilical vein 
E)  ductus byosus

Question 12

Which of the following characterizes the developmental age of an eight month old infant?

Accepted Answer

A)  sits without support 
B)  rolls from its back to its side 
C)  smiles in response to people's faces 
D)  pulls itself up to a standing position 
E)  None of these choices is correct 
A)  sits without support 
B)  rolls from its back to its side 
C)  smiles in response to people's faces 
D)  pulls itself up to a standing position 
E)  None of these choices is correct

Question 13

The male and female reproductive systems begin as an indifferent stage. If testosterone is present, which of the following occurs?

Accepted Answer

A)  The paramesonephric duct forms the vagina. 
B)  The mesonephric ducts form the ductus deferens. 
C)  The mesonephric ducts atrophy. 
D)  The paramesonephric ducts enlarge to form the scrotum. 
E)  The paramesonephric duct atrophies. 
A)  The paramesonephric duct forms the vagina. 
B)  The mesonephric ducts form the ductus deferens. 
C)  The mesonephric ducts atrophy. 
D)  The paramesonephric ducts enlarge to form the scrotum. 
E)  The paramesonephric duct atrophies.

Question 14

The birth process is called

Accepted Answer

A)  micturition. 
B)  gastrulation. 
C)  organogenesis. 
D)  parturition. 
E)  expulsion. 
A)  micturition. 
B)  gastrulation. 
C)  organogenesis. 
D)  parturition. 
E)  expulsion.

Question 15

Which germ layer is the brain and spinal cord derived from?

Accepted Answer

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

Question 16

The testes leave the abdominal cavity and reach the scrotum by passing through the

Accepted Answer

A)  urogenital opening. 
B)  inguinal canal. 
C)  cloaca. 
D)  urethra. 
E)  Wolffian ducts. 
A)  urogenital opening. 
B)  inguinal canal. 
C)  cloaca. 
D)  urethra. 
E)  Wolffian ducts.

Question 17

An infant who has just started cooing and gurgling in response to smiles and attention from its parents is about _____ months old.

Accepted Answer

A)  two 
B)  four 
C)  six 
D)  eight 
E)  ten 
A)  two 
B)  four 
C)  six 
D)  eight 
E)  ten

Question 18

If an albino (aa) mates with a person homozygous for normal pigment (AA),

Accepted Answer

A)  half of the offspring are normal. 
B)  half of the offspring are albinos. 
C)  all offspring are normal. 
D)  all offspring are albinos. 
E)  None of these choices is correct. 
A)  half of the offspring are normal. 
B)  half of the offspring are albinos. 
C)  all offspring are normal. 
D)  all offspring are albinos. 
E)  None of these choices is correct.

Question 19

A different form of an allele at a particular locus that can have no effect to major effects on the phenotype is a(n)

Accepted Answer

A)  allelic variant. 
B)  mutated allele. 
C)  polymorphism. 
D)  All of the choices are correct. 
A)  allelic variant. 
B)  mutated allele. 
C)  polymorphism. 
D)  All of the choices are correct.

Question 20

Chromosome pairs are called

Accepted Answer

A)  karyotypes. 
B)  genomes. 
C)  homologous pairs. 
D)  loci. 
E)  haploid. 
A)  karyotypes. 
B)  genomes. 
C)  homologous pairs. 
D)  loci. 
E)  haploid.

Exam 29: Development, Growth, Aging, and Genetics

The central cavity of the neural tube becomes the

An organism's genetic makeup is its ____ while its physical appearance is its ____.

The thickened area of the blastocyst from which the embryo develops is called the _______________.

The lungs develop from

Atoms or molecules with unpaired electrons that can react with normal cells and cause damage are called ______.

Down Syndrome is an example of an aneuploidy called

The first functional kidney is the

Onset of labor may result from

Where does implantation normally occur?

Damage to the mesoderm during embryological development would affect the formation of the

Which of the following fetal shunts bypasses the fetal lungs?

Which of the following characterizes the developmental age of an eight month old infant?

The male and female reproductive systems begin as an indifferent stage. If testosterone is present, which of the following occurs?

The birth process is called

Which germ layer is the brain and spinal cord derived from?

The testes leave the abdominal cavity and reach the scrotum by passing through the

An infant who has just started cooing and gurgling in response to smiles and attention from its parents is about _____ months old.

If an albino (aa) mates with a person homozygous for normal pigment (AA),

A different form of an allele at a particular locus that can have no effect to major effects on the phenotype is a(n)

Chromosome pairs are called

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

Filters

An organism's genetic makeup is its while its physical appearance is its .