Test Bank Complete_ Essentials Of Oral Histology And Embryology: A Clinical Approach 6th Edition, (2023. Daniel J. Chiego, Jr.) All Chapter 1-16 (and each chapter Have True/False Statements: Questions)

Test Bank Complete_ Essentials Of Oral Histology And
Embryology: A Clinical Approach 6th Edition, (2023.
Daniel J. Chiego, Jr.) All Chapter 1-16 (and each chapter
Have True/False Statements: Questions)

A pluripotent cell can:
· Become the syncytiotrophoblast
· Become any other body cell including the placenta
· Become the cytotrophoblast
· Become any other body cell except the placenta
· Become the trophoblast - ANSWERThe correct answer is: Become any other body
cell except the placenta

All of the following describe the events of blastomere cleavage except
· Mitosis
· Hyperplasia
· Morula stage at about 3-4 days
· Compaction
· Hypertrophy - ANSWERThe correct answer is: Hypertrophy

An example of a unipotent cell would be which of the following
· Cardiac muscle
· Ectoderm
· Connective tissue
· Neural crest cells
· Mesoderm - ANSWERThe correct answer is: Cardiac muscle

Developmental age is ______ clinical age.
· longer than
· Shorter than
· the same as - ANSWERThe correct answer is: Shorter than

During the events of fertilization, the sperm binds to
· The zona radiata
· The trophoblast
· The egg cell's DNA
· The blastomeres
· The zona pellucida - ANSWERThe correct answer is: The zona pellucida

Fertilization usually occurs in the ______________of the fallopian tube.
· 2nd third
· 1st third
· Near the infundibulum where it lies near the ovaries
· 3rd third
· In the uterus - ANSWERThe correct answer is: 1st third

,Human somatic cells, i.e., other than germ cells, contain ______ chromosomes.
· 33
· 23
· 42
· 46
· 22 - ANSWERThe correct answer is: 46

The ovulated egg cell or oocyte is considered a __________oocyte.
· Quaternary
· Primary
· Secondary
· Tertiary - ANSWERThe correct answer is: Secondary

Which of the following best describes the term epigenetics?
· Changes in the behavior or phenotype of an organism caused by modification of
gene expression rather than the alteration of the DNA base pairs
· Changes in the regulation of DNA base pairs through mutations
· It describes the biogenetic law or ontogeny recapitulates phylogeny
· The transcription of proteins
· The regulation of DNA by changing the genetic code - ANSWERThe correct answer
is: Changes in the behavior or phenotype of an organism caused by modification of
gene expression rather than the alteration of the DNA base pairs

Which of the following describes the correct order in time?
· Trophoblast: blastomere: cytotrophoblast: syncytiotrophoblast
· Trophoblast: blastomere: syncytiotrophoblast: cytotrophoblast
· Blastomere: cytotrophoblast: trophoblast: syncytiotrophoblast
· Blastomere: trophoblast: cytotrophoblast: syncytiotrophoblast
· Blastomere: trophoblast: syncytiotrophoblast: cytotrophoblast - ANSWERThe
correct answer is: Blastomere: trophoblast: cytotrophoblast: syncytiotrophoblast

Cytodifferentiation is defined as
· The development of different tissue types
· The process of cell hypertrophy
· The development of different cell types
· The process of maturation
· The development of differing structure or shape - ANSWERThe correct answer is:
The development of different cell types

Down syndrome is an example of which of the following?
· Disjunction
· Inappropriate mitosis
· A missing copy of chromosome 21
· Ectopic implantation
· Aneuploidy - ANSWERThe correct answer is: Aneuploidy

, Gastrulation can be described by all of the following terms except
· Is first observed in the hypoblast around day 14
· Begins at the most caudal boundary of the epiblast
· Generates the structure called the notochord which will become intervertebral
discs in the adult animal
· Produces the endoderm, mesoderm and ectoderm of the developing embryo
· Uses a structure called the primitive streak to facilitate epithelial to mesenchymal
transitions - ANSWERThe correct answer is: Is first observed in the hypoblast around
day 14

Human Chorionic Gonadotropin or hCG is produced from ____________and is
detected in the ___________.
· Syncytiotrophoblast; fetal blood
· Inner cell mass or epiblast; fetal blood
· Inner cell mass or epiblast; amniotic fluid
· Amniotic cavity; maternal blood
· Syncytiotrophoblast; maternal blood - ANSWERThe correct answer is:
Syncytiotrophoblast; maternal blood

Somites are made of mostly ___________.
· Muscle only
· Mesoderm
· Ectoderm
· Connective tissue only
· Endoderm - ANSWERThe correct answer is: Mesoderm

The beginning of nervous system development occurs during week ______.
· Four
· Three
· Two
· One - ANSWERThe correct answer is: Three

The inner cell mass will produce all of the following except
· The chorion
· Ectoderm
· Neural crest cells
· Endoderm
· Mesoderm - ANSWERThe correct answer is: The chorion

The oropharyngeal membrane is the future __________.
· Larynx
· Heart
· Anus
· Mouth
· Gut - ANSWERThe correct answer is: Mouth

The primary yolk sac develops from which of the following