DEVBIOL LE2 EXAM QUESTIONS
WITH COMPLETE SOLUTIONS
,Epiblast and Hypoblast - ANSWERSThis Results to Delamination
Primitive Streak Formation - ANSWERSEpiblast and Hypoblast Results to Delamination
forming the
Invagination - ANSWERSType of Movement of Cells through the Primitive Streak
Endoderm - ANSWERSMoves Downward
Embryonic Mesoderm - ANSWERSWhat Eventually regresses?
Germ Layers - ANSWERSEctoderm, Mesoderm, Endoderm are mainly called the
Trilaminar Disc Formation - ANSWERSEctoderm, Mesoderm, Endoderm are also
referred to as
Epiblast - ANSWERSHas undergone SPLITTING
Embryonic Epiblast and Amniotic Ectoderm - ANSWERSThis forms when the Epiblast
has underdone splitting
Thicker Layer of Cytotrophoblast - ANSWERSWhat results in the Proliferation of the
Trophoblastic Cells
Syncytiotrophoblast - ANSWERSHas distinct intercellular separations are called ______
TRUE - ANSWERSTRUE OR FALSE. Are cellular membranes lost in
Syncytiotrophoblast?
Lacunae - ANSWERSSpaces in the Syncytiotrophoblast are called _____
Placenta - ANSWERSProliferation of Blood Vessels forming the _____
Blastocyst - ANSWERSComposed of Intracellular Membranes
Intracellular Membranes - ANSWERSThis has undergone splitting/delamination
Epiblast and Hypoblast - ANSWERSResult of splitting of Intracellular Membranes
Bilaminar Disc Formation - ANSWERSWhat is the Epiblast and Hypoblast called?
Extraembryonic Endoderm - ANSWERSWhat forms from the Hypoblast?
, Yolk Sac (Endoderm) - ANSWERSWhat forms from the Extraembryonic Mesoderm?
Trophoblast - ANSWERSAnother result from the Blastocyst
Cytotrophoblast - ANSWERSProliferation from the Trophoblast that increases in Cell
Population to form this
Cytotrophoblast - ANSWERSThis contains the original cells of the Trophoblast
TRUE - ANSWERSTRUE OR FALSE. Is the layer of the trophoblast responsible for the
attachment of the blastocyst to the uterine lining?
FALSE, it is HIGHLY CELLULAR - ANSWERSTRUE OR FALSE. The Uterine Lining is
NOT HIGHLY CELLULAR.
Syncytiotrophoblast - ANSWERSWhere does the Cytotrophoblast progress further into
the Uterine Wall?
TRUE. - ANSWERSTRUE OR FALSE. Does the Syncytiotrophoblast have lost its
cellular membranes?
Embryonic Epiblast and Amniotic Ectoderm - ANSWERSResult of Epiblast undergoing
splitting and delamination
Embryonic Epiblast - ANSWERSMigration of Cells toward the Midline are called?
Primitive Streak - ANSWERSWhat forms from the migration of Cells towards the
Midline?
Embryonic Endoderm, Embryonic Mesoderm, Notochordal Process - ANSWERSResult
of Morphogenetic Movement from the Primitive Streak
TRUE - ANSWERSTRUE OR FALSE. Amniotic Ectoderm/Amnion, Extraembryonic
Endoderm, Yolk Sac, and Components of the Cytotrophoblast are differentiations to the
Syncytiotrophoblast and Extraembryonic Endoderm to form the large part of the
Placenta?
Anteriorly - ANSWERSWhich way does Oropharyngeal Membrane form in?
Primitive Node - ANSWERSWhere does the cephalically migrating pre-notochordal cells
pass through?
Site of Invaginating Cells - ANSWERSCross Section (Cranial Region; Invagination of
Epiblast)
WITH COMPLETE SOLUTIONS
,Epiblast and Hypoblast - ANSWERSThis Results to Delamination
Primitive Streak Formation - ANSWERSEpiblast and Hypoblast Results to Delamination
forming the
Invagination - ANSWERSType of Movement of Cells through the Primitive Streak
Endoderm - ANSWERSMoves Downward
Embryonic Mesoderm - ANSWERSWhat Eventually regresses?
Germ Layers - ANSWERSEctoderm, Mesoderm, Endoderm are mainly called the
Trilaminar Disc Formation - ANSWERSEctoderm, Mesoderm, Endoderm are also
referred to as
Epiblast - ANSWERSHas undergone SPLITTING
Embryonic Epiblast and Amniotic Ectoderm - ANSWERSThis forms when the Epiblast
has underdone splitting
Thicker Layer of Cytotrophoblast - ANSWERSWhat results in the Proliferation of the
Trophoblastic Cells
Syncytiotrophoblast - ANSWERSHas distinct intercellular separations are called ______
TRUE - ANSWERSTRUE OR FALSE. Are cellular membranes lost in
Syncytiotrophoblast?
Lacunae - ANSWERSSpaces in the Syncytiotrophoblast are called _____
Placenta - ANSWERSProliferation of Blood Vessels forming the _____
Blastocyst - ANSWERSComposed of Intracellular Membranes
Intracellular Membranes - ANSWERSThis has undergone splitting/delamination
Epiblast and Hypoblast - ANSWERSResult of splitting of Intracellular Membranes
Bilaminar Disc Formation - ANSWERSWhat is the Epiblast and Hypoblast called?
Extraembryonic Endoderm - ANSWERSWhat forms from the Hypoblast?
, Yolk Sac (Endoderm) - ANSWERSWhat forms from the Extraembryonic Mesoderm?
Trophoblast - ANSWERSAnother result from the Blastocyst
Cytotrophoblast - ANSWERSProliferation from the Trophoblast that increases in Cell
Population to form this
Cytotrophoblast - ANSWERSThis contains the original cells of the Trophoblast
TRUE - ANSWERSTRUE OR FALSE. Is the layer of the trophoblast responsible for the
attachment of the blastocyst to the uterine lining?
FALSE, it is HIGHLY CELLULAR - ANSWERSTRUE OR FALSE. The Uterine Lining is
NOT HIGHLY CELLULAR.
Syncytiotrophoblast - ANSWERSWhere does the Cytotrophoblast progress further into
the Uterine Wall?
TRUE. - ANSWERSTRUE OR FALSE. Does the Syncytiotrophoblast have lost its
cellular membranes?
Embryonic Epiblast and Amniotic Ectoderm - ANSWERSResult of Epiblast undergoing
splitting and delamination
Embryonic Epiblast - ANSWERSMigration of Cells toward the Midline are called?
Primitive Streak - ANSWERSWhat forms from the migration of Cells towards the
Midline?
Embryonic Endoderm, Embryonic Mesoderm, Notochordal Process - ANSWERSResult
of Morphogenetic Movement from the Primitive Streak
TRUE - ANSWERSTRUE OR FALSE. Amniotic Ectoderm/Amnion, Extraembryonic
Endoderm, Yolk Sac, and Components of the Cytotrophoblast are differentiations to the
Syncytiotrophoblast and Extraembryonic Endoderm to form the large part of the
Placenta?
Anteriorly - ANSWERSWhich way does Oropharyngeal Membrane form in?
Primitive Node - ANSWERSWhere does the cephalically migrating pre-notochordal cells
pass through?
Site of Invaginating Cells - ANSWERSCross Section (Cranial Region; Invagination of
Epiblast)
