Embryonic period Flashcards
Embryonic period is between what weeks
5-10
Gastrulation forms the
germ layers
The 3 germ layers are
ecto, endo, mesoderm
Ectoderm forms
brain, spinal cord, nerves, skin, hair, nails
Mesoderm forms
heart, kids, bones, cartilage, muscles, blood cells and vessels
Endoderm forms
lining of respiratory system and GI tract, liver, panc, GB
Process of neurulation forms
the neural tube
Umbilical cord forms at the end of what week
6th
the umbilical cord has __ arterie(s) and ___ vein(s)
2 UAs 1 UV
Heart begins to beat by what week
end of 5th, beginning of 6th
Brain begins as 3 primary ventricles known as the
prosencephalon (forebrain), mesencephalon (midbrain), rhombencephalon (hindbrain)
Prosencephalon divides into
telencephalon, diencephalone
telencephalon forms
cerebrum, lat vents
diencephalon forms
thalamus, pituitary, 3rd vent
left side of mesencephalon forms
aqueduct, peduncles
