Gastrulation

Question 1

occurs in which week

Answer 1

3rd week

Question 2

define gastrulation

Answer 2

transformation of bliaminar into trilaminar embryonic disc and axial orientation of embryo

Question 3

the embryo with 3 germ layers is called

Answer 3

gastrula

Question 4

under the influence/stimulation of

Answer 4

signalling molecules

Question 5

example of signalling molecules

Answer 5

FGF

Question 6

FGF stands for

Answer 6

fibroblast growth factor

Question 7

Embryonic Ectoderm gives rise to

Answer 7

epidermis
nervous system
ears
eyes
neural crest cells

Question 8

Embryonic Endoderm forms

Answer 8

lining of Resp and GIT

glands and gland cells of above systems

Question 9

Embryonic Mesoderm gives rise to

Answer 9

skeletal muscle
smooth muscle
blood cells
blood vessels
serosal lining of body cavitites
organs and ducts of Exc, Rep and CV system
all the connective tissues except limbs and head

Question 10

define morphogenesis

Answer 10

origin and development of morphological characters

Question 11

first morphologic sign of gastrulation

Answer 11

primitive streak formation

Question 12

where does primitive streak forms

Answer 12

epiblast

Question 13

on which end does primitive streak forms

Answer 13

caudal end