Development 1

Question 1

refer to the development of specialized cell types

Answer 1

differentiation

Question 2

cells that can self renew as well as differentiate into different cell types

Answer 2

stem cells

Question 3

refers to the possible cell types that a specific cell can generate during normal development

Answer 3

potency

Question 4

give rise to any cell type

Answer 4

totipotent

Question 5

give rise to numerous cell types

Answer 5

pluripotent

Question 6

transport of zygote and implantations

gastrulation begins

Answer 6

pre-embryonic - 1st 2 weeks after fertilization

Question 7

gastrulation complete
neurulation + organ formation starts
umbilical cord and extra embryonic membranes

Answer 7

embryonic development - weeks 3-9

Question 8

growth and further organ specialization

Answer 8

fetal period - 9 weeks to birth

Question 9

aminion, yolk sac, placenta

Answer 9

extraembryonic membranes

Question 10

becomes extra-embryonic tissues

Answer 10

hypoblast

Question 11

gives rise to embryo

Answer 11

epiblast

Question 12

scyncytiotrophoblast proliferate/invades the endometrium

amniotic cavity forms as a space within the epiblast

Answer 12

Day 8

Question 13

implantation complete
epiblast forms 2 layers around growing amnionic cavity
Heuser’s membrane forms

Answer 13

Day 9

Question 14

erosion of maternal capillaries
yolk sac forms
extra embryonic mesoderm forms

Answer 14

Day 10-11

Question 15

extra embryonic mesoderm lines Heuser’s membrane
chorionic mesoderm forms
ee memsoderm separates cytotrophoblast from amnioblasts

Answer 15

Day 12

Question 16

definitive yolk sac forms

Answer 16

Day 13

Question 17

amniotic cavity forms
embryo proper forms
2 layers - hypoblast and epiblast

Answer 17

Day 14-15