ew embryo

Question 1

surface ectoderm

Answer 1

epidermis: adenohypophysis 
lens of eye 
epithelial linings of oral cavity 
sensory organs of ear and olfactory epithelium ,anal canal below the pectinate line 
parotid ,sweat and mammary gland

Question 2

neural tube

Answer 2

brain neurohypophysis,cns neurons ,oligodendrocytes ,astrocytes ependymal cells ,pineal gland retina ,spinal cord

Question 2

neural tube

Answer 2

brain neurohypophysis,cns neurons ,oligodendrocytes ,astrocytes ependymal cells ,pineal gland retina ,spinal cord

Question 3

neural crest

Answer 3

ELMO PASSES :enterochromaffin cells ,leptomeninges ,melanocytes ,odontoblasts ,pns ganglia,pns ganglia ,adrenal medulla, schwann cells ,spiral membrane (aorticopulm septum) endocardial cushions ,skull bones

Question 4

mesoderm

Answer 4

muscle ,bone .connective tissue ,serous linings of body cavities ,develops within foregut mesentery )cvs structures ,lymphatics ,blood ,wall of gut tube ,upper 2/3 of vagina ,kidneys ,adrenal cortex ,dermis ,testes,ovaries,microglia ,dura mater ,tracheal cartilage
notochord induces ectoderm to form neuroectoderm its only post natal derivative is the nuclues polposus of the interverterbal disc

Question 5

mesodermal defects

Answer 5

vacterl 
vertebral defects 
anal atresia 
cardiac defects 
tracheoespophegeal fistula 
renal defects 
limb defects

Question 6

endoderm

Answer 6

gut tube epi (including anal canal above the pectinate line )
most urethra and lower 1/3 of vagina ,derived from urogenital sinus
luminal epi derivatives lungs gallbladder pancreas eustachian tube thymus parathyriod ,thyroid follicular and parafollicular c cells