Question 1

A cleft lip results when

Accepted Answer

A)  the two halves of the secondary palate do not fuse. 
B)  the frontonasal and maxillary processes do not fuse. 
C)  the lateral edges of the nasal placodes do not fuse with the maxillary processes. 
D)  the maxillary processes do not fuse with the mandibular processes. 
E)  None of these choices is correct. 
A)  the two halves of the secondary palate do not fuse. 
B)  the frontonasal and maxillary processes do not fuse. 
C)  the lateral edges of the nasal placodes do not fuse with the maxillary processes. 
D)  the maxillary processes do not fuse with the mandibular processes. 
E)  None of these choices is correct.

Question 2

The placenta plays an important role in

Accepted Answer

A)  implantation. 
B)  onset of lactation. 
C)  beginning of parturition. 
D)  provision of nutrients to the fetus. 
E)  insulating the fetus. 
A)  implantation. 
B)  onset of lactation. 
C)  beginning of parturition. 
D)  provision of nutrients to the fetus. 
E)  insulating the fetus.

Question 3

The chorionic villi

Accepted Answer

A)  form from branches of the syncytiotrophoblast cords. 
B)  increase surface area of the amniotic cavity. 
C)  contribute to the formation of the placenta. 
D)  are necessary for implantation to occur. 
E)  are not part of the placental formation. 
A)  form from branches of the syncytiotrophoblast cords. 
B)  increase surface area of the amniotic cavity. 
C)  contribute to the formation of the placenta. 
D)  are necessary for implantation to occur. 
E)  are not part of the placental formation.

Question 4

The stage of labor in which the fetus is expelled is

Accepted Answer

A)  the first stage. 
B)  the second stage. 
C)  the third stage. 
D)  the fourth stage. 
E)  the fifth stage. 
A)  the first stage. 
B)  the second stage. 
C)  the third stage. 
D)  the fourth stage. 
E)  the fifth stage.

Question 5

When stretch receptors in the cervix are stimulated by the continually increasing pressure of the fetus, afferent neurons send impulses to the maternal hypothalamus resulting in

Accepted Answer

A)  increased estrogen production. 
B)  increased oxytocin production. 
C)  increased fetal CRH production. 
D)  increased growth in the size of the placenta. 
E)  decreased oxytocin production. 
A)  increased estrogen production. 
B)  increased oxytocin production. 
C)  increased fetal CRH production. 
D)  increased growth in the size of the placenta. 
E)  decreased oxytocin production.

Question 6

-What does "A" 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 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

-The picture shows a full term pregnancy. What does "C" represent?

Accepted Answer

A)  placenta 
B)  umbilical cord 
C)  urinary bladder 
D)  mucus plug in cervical canal 
E)  vagina 
A)  placenta 
B)  umbilical cord 
C)  urinary bladder 
D)  mucus plug in cervical canal 
E)  vagina

Question 9

The waxy coat of sloughed epithelial cells that covers the fetus is called

Accepted Answer

A)  lanugo. 
B)  fetal hair. 
C)  colostrum. 
D)  vernix caseosa. 
E)  primary hair. 
A)  lanugo. 
B)  fetal hair. 
C)  colostrum. 
D)  vernix caseosa. 
E)  primary hair.

Question 10

Fusion of the male and female pronuclei

Accepted Answer

A)  results in an oocyte forming. 
B)  restores the diploid number of chromosomes. 
C)  occurs before ovulation. 
D)  results in a haploid cell forming. 
E)  results in a total of 23 chromosomes. 
A)  results in an oocyte forming. 
B)  restores the diploid number of chromosomes. 
C)  occurs before ovulation. 
D)  results in a haploid cell forming. 
E)  results in a total of 23 chromosomes.

Question 11

What structure forms the roof of the mouth?

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 12

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 13

Autoimmune diseases such as arthritis become more common as people get older. "Autoimmune" means that the immune system

Accepted Answer

A)  no longer produces antibodies. 
B)  destroys the body's own tissues. 
C)  is incapable of initiating phagocytosis. 
D)  produces T cells but no B cells. 
E)  protects itself. 
A)  no longer produces antibodies. 
B)  destroys the body's own tissues. 
C)  is incapable of initiating phagocytosis. 
D)  produces T cells but no B cells. 
E)  protects itself.

Question 14

Which germ layer is the urinary bladder derived from?

Accepted Answer

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

Question 15

The genotype WW is best described as

Accepted Answer

A)  homozygous recessive. 
B)  homozygous dominant. 
C)  heterozygous dominant. 
D)  heterozygous recessive. 
E)  homorecessive. 
A)  homozygous recessive. 
B)  homozygous dominant. 
C)  heterozygous dominant. 
D)  heterozygous recessive. 
E)  homorecessive.

Question 16

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 17

What genetic disorder is caused by having three chromosomes 21?

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 18

What term means that both alleles are different?

Accepted Answer

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

Question 19

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 20

Which gland is derived from both neural crest cells and mesoderm?

Accepted Answer

A)  anterior pituitary gland 
B)  posterior pituitary gland 
C)  thyroid gland 
D)  adrenal glands 
E)  pancreas 
A)  anterior pituitary gland 
B)  posterior pituitary gland 
C)  thyroid gland 
D)  adrenal glands 
E)  pancreas

Exam 29: Development, Growth, Aging, and Genetics

A cleft lip results when

The placenta plays an important role in

The chorionic villi

The stage of labor in which the fetus is expelled is

When stretch receptors in the cervix are stimulated by the continually increasing pressure of the fetus, afferent neurons send impulses to the maternal hypothalamus resulting in

-What does "A" represent on the diagram?

The embryonic heart

-The picture shows a full term pregnancy. What does "C" represent?

The waxy coat of sloughed epithelial cells that covers the fetus is called

Fusion of the male and female pronuclei

What structure forms the roof of the mouth?

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

Autoimmune diseases such as arthritis become more common as people get older. "Autoimmune" means that the immune system

Which germ layer is the urinary bladder derived from?

The genotype WW is best described as

The birth process is called

What genetic disorder is caused by having three chromosomes 21?

What term means that both alleles are different?

The first functional kidney is the

Which gland is derived from both neural crest cells and mesoderm?

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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