Developmental Biology
BIO 442
CHAPTER 11 TERMS TO KNOW
The following terms are freely used in your text book. Make sure you know what they
mean, how they are used, and how to use them. When an example is given, make sure you can
describe and recall it. If a picture is provided, know what the structure looks like and where it is
located. If a diagram describes an experiment, make sure you understand the experiment by
being able to describe it in your own words. It is often helpful to look in other chapters of the
book to gain a thorough understanding of how the terms are used. Although some terms may not
be mentioned in class, as a student of developmental biology you are still responsible for
understanding them. Do explore Vade Mecum and the Web sites.
MAMMALS
Isolecithal egg
Site of fertilization
Rotational holoblastic
cleavage
Characteristics of cleavage
in mammals
Zygotic gene activation
Compaction
Tight junctions
Morula
Blastocyst
Inner cell mass
Trophoblast
Cytotrophoblast
Syncytiotrophoblast
Chorion
Placenta
Blastocyst hatching
Strypsin
Zona pellucida
Ectopic pregnancy
Tubal pregnancy
Abdominal pregnancy
Ovarian pregnancy
Cervical pregnancy
Implantation
Integrin
Endometrium
Human chorionic
gonadotropin (hCG)
Trophoblastic neoplasia
Fetal circulation
Diffusion of substances
across placenta
Gastrulation
Epiblast
Hypoblast
Caudal margin
Primitive streak
Primitive groove
Node
E-cadherin
Extraembryonic tissues
Amnion
Yolk sac
Chorion
Fig. 11.31
Amniotic cavity
Chorionic cavity
Embryonic disk
Amniocentesis
Amniotic fluid
Types of monozygotic
twins
Conjoined twins (Siamese
twins)
Anterior-posterior axis
formation
Node
Chordin
Noggin
Chordin & Noggin
knockout mouse
Anterior visceral endoderm
Lim-1
Lim-1 knockout mouse
Hox genes
HOX genes
HOM-C
Paralogous groups
Hox gene expression in
mouse embryo
Hoxc-8 knockout mouse
Retinoic acid & Hox gene
expression
Dorsal-ventral axis
formation
Examples of asymmetry in
mammalian body
Situs inversus viscerum
(iv)
iv mutants
Inversion of embryonic
turning (inv)
inv mutants
Left-right axis formation
Dynein
Leftward cilia movement
of node cells
Nodal expression
Lefty-1
Lefty-2
Pitx2
Snail
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