Ectoderm Flashcards
1
Q
Three layers of ectoderm
A
Surface ectoderm
Neuroectoderm
Neural crest
2
Q
Surface ectoderm
A
Adenohypophysis (Rathke's pouch) Lens of eyes Epithelial of oral cavity Sensory organ of ear Olfactory epithelium Epidermis Anal canal below the pectinate line Parotid, sweat, and mammary glands
3
Q
Disease of surface ectoderm
A
Craniopharyngioma: benign Rathke’s pouch tumor
with cholesterol crystals, calcification.
4
Q
Neuroectoderm
A
Brain (also pineal gland)
Retina and optic nerve,
spinal cord
5
Q
Neural crest
A
PNS Menaloncytes, chromaffin cells of adrenal gland parafollicular (C) cells of thyroid Pia and arachnoid, Bones of skulls odotoblasts AP septum
Think of PNS and non-neural structures
