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DEVBIOL LE2 Exam 2025-
2026 with correct questions
and detailed answers 2025
verified
what morphogenetic movement is associated with
the formation of hypoblast and epiblast -
ANSWERdelamination
what are the two distinct populations of cells -
ANSWER-icm and trophoblast
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what are formed form the epiblast -
ANSWERembryonic epiblast and amniotic
ectoderm what will be formed as cells move through
the primitive streak - ANSWER-embryonic
endoderm, mesoderm, and notochordal process
formation of epiblast and hypoblast layers -
ANSWER-bilaminar disc formation
formation of the three embryonic germ layers -
ANSWER-trilaminar disc formation
what structure will rise from the hypoblast -
ANSWER-yolk sac
highly cellular layer of the trophoblast -
ANSWERcytotrophoblast
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responsible for the initial attachment of the
blastocysts to the uterine lining -
ANSWERcytotrophoblast
formed when the cytotrophoblast progresses further
into the uterine wall - ANSWERsynctiotrophoblast
layer in the trophoblast that has lost the cellular
membranes becoming a syncytial/continuous layer -
ANSWER-synctiotrophoblast
secretes enzymatic enzymes to digest the uterine
wall further for implantation -
ANSWERsynctiotrophoblast
what are the extraembryonic membranes -
ANSWER-amnion, yolk sac, chorion, and allantois
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spaces found in the synctiotrophoblast cells in
preparation for the blood vessels forming the
placenta - ANSWER-lacunae
sequence of formation of the notochord -
ANSWERmesoderm -> prenotochordal cells ->
intercalated at the endoderm -> notochordal plate
(cranial to caudal sequence)
located at the sides of the notochord and extends out
to form the extraembryonic membranes - ANSWER-
intraembryonic mesoderm
dorsal part of the mesoderm on the side of the axial
mesoderm - ANSWER-paraxial mesoderm
between paraxial an lateral plate mesoderm -
ANSWER-intermediate mesoderm
DEVBIOL LE2 Exam 2025-
2026 with correct questions
and detailed answers 2025
verified
what morphogenetic movement is associated with
the formation of hypoblast and epiblast -
ANSWERdelamination
what are the two distinct populations of cells -
ANSWER-icm and trophoblast
,2|Page
what are formed form the epiblast -
ANSWERembryonic epiblast and amniotic
ectoderm what will be formed as cells move through
the primitive streak - ANSWER-embryonic
endoderm, mesoderm, and notochordal process
formation of epiblast and hypoblast layers -
ANSWER-bilaminar disc formation
formation of the three embryonic germ layers -
ANSWER-trilaminar disc formation
what structure will rise from the hypoblast -
ANSWER-yolk sac
highly cellular layer of the trophoblast -
ANSWERcytotrophoblast
,3|Page
responsible for the initial attachment of the
blastocysts to the uterine lining -
ANSWERcytotrophoblast
formed when the cytotrophoblast progresses further
into the uterine wall - ANSWERsynctiotrophoblast
layer in the trophoblast that has lost the cellular
membranes becoming a syncytial/continuous layer -
ANSWER-synctiotrophoblast
secretes enzymatic enzymes to digest the uterine
wall further for implantation -
ANSWERsynctiotrophoblast
what are the extraembryonic membranes -
ANSWER-amnion, yolk sac, chorion, and allantois
, 4|Page
spaces found in the synctiotrophoblast cells in
preparation for the blood vessels forming the
placenta - ANSWER-lacunae
sequence of formation of the notochord -
ANSWERmesoderm -> prenotochordal cells ->
intercalated at the endoderm -> notochordal plate
(cranial to caudal sequence)
located at the sides of the notochord and extends out
to form the extraembryonic membranes - ANSWER-
intraembryonic mesoderm
dorsal part of the mesoderm on the side of the axial
mesoderm - ANSWER-paraxial mesoderm
between paraxial an lateral plate mesoderm -
ANSWER-intermediate mesoderm
