Embryogenesis

Question 1

Capacitation

Answer 1

Sperm get modified in the vaginal tract to prepare to release enzyme to degrade ZP

Question 2

Corona Radiata

Answer 2

Outermost layer
Chemoattractants for sperm
Also known as cloud thing

Question 3

Zona Pellicuda

Answer 3

Made up of Zona proteins

ZP3 binds sperm

Question 4

Oocyte polyspermy block

Answer 4

Fast- depolarizers

Slow- Ca cascade

Question 5

ICM becomes

Answer 5

Embryoblast

Question 6

OCM becomes

Answer 6

Trophoblast

Question 7

Hydraminos

Answer 7

Oligo- not enough

Poly- too much

Question 8

Fetal part of placenta

Answer 8

Chordrion fondosum

Question 9

Maternal part of the placenta

Answer 9

Decidua basilisk

Question 10

Epiderm

Answer 10

Communication with external environment

Question 11

Mesoderm

Answer 11

Support through muscles and CT

Question 12

Endoderm

Answer 12

Digestion, breathing, secreting

Tubes

Question 13

Retinoic acid

Answer 13

Acts against FGF, too much results in loss of posterior development

Question 14

Thalidomide

Answer 14

Gives little arms

Used for leprosy

Question 15

TGF-B and FGF

Answer 15

Ligands that signal to growth factors
TGF-b dimerizes and binds to receptor
FGF binds to glycosaminoglycan chain and then to receptor

Question 16

AVE

Answer 16

Area in embryo that produces enzymes (BMP-4) to push back posteriorly on nodal progression