Fetal Period, days, and tumors

Tumors from epithelium

can be mesoderm or endo/ectoderm

tumors from epithelium mesoderm

angioma b, sarcoma m

tumors from epithelium endo/ectoderm

papilloma/adenoma b, carcinoma m

tumors from connective tissue

fibroma/lipoma b, sarcoma m

tumors from muscle

myomas b, myosarcoma m

Day 18 of development

neural plate forms

day 20 of development

first somite forms

day 22 of development

neural plate begins to close

day 24-25 of development

cranial neuropore closes

day 27-28 of development

caudal neuropore begins to close

Mesoderm layer splits into what

paraxial, intermediate, lateral plate

lateral plate mesoderm splits into what

splanchnic (endoderm) and somatopleuric (ectoderm)

Weeks 9-12

liver making rbc, can see genitals

weeks 13-16

ossification of bone, eyes facing foward

weeks 17-20

1 oocytes forming, testes descend

weeks 21-25

surfactant being made

weeks 26-29

lungs can breath, cns can control breathing and body temp, spleen makes rbc will shift to marrow

weeks 35-38

finishing period

things most at risk in fetal period

brain, eyes, ears, pallet, teeth, external genitalia