Embryology Flashcards
What forms from ectoderm?
epidermis and nervous system
What froms from the mesoderm?
bone, muscle, blood cells
What forms from the endoderm?
gut, pharynx and lungs
What does thickening of ectoderm anterior to the primitive node create?
neural plate
When does the anterior and posterior neuropore close?
anterior neuropore closes day 25 and the posterior neuropore closes day 27
What neural tube defects can occur from failure of neural tube to close?
anencephaly, encephalocoele, spina bifida
Go over anencephaly, encephalocoele, spina bifida
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What are the 3 primary brain vesicles formed?
prosencephalon, mesencephalon, rhombencephalon
What are the 5 secondary brain vesicles formed?
telencephalon, diencephalon, mesencephalon, mentencephalon, myelenecephalon
When does the cephalic flexure occur and between what
3rd week between the midbrain brain and hindbrain: mesencephalon and rhombencephalon
When does the cervical flexure occur and between what
end of 4th week between hindbrain and spinal cord
When does the pontine flexure occur and between what
5th week, in the hindbrain (between metencephalon and myelencephalon)
Go over brain vesciles
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When does CSF begin to form?
during 5th week
Go over hydrocephalus
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