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Embryologic Derivs
Embryological Derivatives (Endo, Ecto, Mesoderm)
Question | Answer |
---|---|
adenohypophysis (rathke's pouch) | surface ectoderm |
lens of eye | surface ectoderm |
epithelial lining of oral cavity | surface ectoderm |
sensory organ of ear, retina, and olfactory epithelium | surface ectoderm |
epidermis | surface ectoderm |
salivary, sweat, and mammary glands | surface ectoderm |
neurohypophysis | neuroectoderm (makes brain in general) |
CNS neurons | neuroectoderm (makes brain in general) |
oligodendrocytes | neuroectoderm (makes brain in general) |
astrocytes | neuroectoderm (makes brain in general) |
ependymal cells | neuroectoderm (makes brain in general) |
pineal gland | neuroectoderm (makes brain in general) |
retina | neuroectoderm (makes brain in general) |
spinal cord | neuroectoderm (makes brain in general) |
ANS | neural crest |
neural crest | ANS, dorsal root ganglia, cranial nerves, celiac ganglion, melanocytes, chromaffin cells, enterochromaffin cells, parafollicular (C) cells of thyroid, schwann cells, pia and arachnoid, bones of skull, odontoblasts, laryngeal cartilage, aorticopulm septum |
dorsal root ganglia | neural crest |
cranial nerves | neural crest |
bones of skull | neural crest |
melanocytes | neural crest |
celiac ganglia | neural crest |
chromaffin cells of adrenal medulla | neural crest |
enterochromaffin cells | neural crest |
odontoblasts | neural crest (think "CREST toothpaste for teeth") |
parafollicular C cells of thyroid | neural crest |
schwann cells | neural crest |
pia | neural crest |
arachnoid | neural crest |
laryngeal cartilage | neural crest |
aorticopulmonary system | neural crest |
In general: neural crest is ___ nervous system and non-____ structures nearby | peripheral (PNS), non-neural structures nearby |
Neuroectoderm: in general, ___ nervous system and ___ | central (CNS)and brain |
Endoderm | gut tube epithelium and derivatives (liver, lungs, pancreas, thymus, parathyroid, thyroid follicular cells) |
gut tube epithelium | endoderm |
liver | endoderm |
pancreas | endoderm |
lungs | endoderm |
thymus | endoderm |
follicular cells of thyroid | endoderm |
parathyroid gland | endoderm |
mesoderm | muscle, bone, CT, serous linings (e.g. peritoneum), spleen (foregut mesentery), cardiovascular structures, lymphatics, blood, urogenital structures, kidney, adrenal cortex |
muscle | mesoderm |
bones | mesoderm |
connective tissue | mesoderm |
spleen | mesoderm (foregut mesentery) |
cardiovascular structures | mesoderm |
kidneys | mesoderm |
urogenital structures | mesoderm |
blood | mesoderm |
lymphatics | mesoderm |
adrenal cortex | mesoderm |
notochord - what it do? | induces ectoderm to form neuroectoderm (neural plate). postnatal derivative is nucleus pulposus of intervertebral disk |
nucleus pulposus | notochord |
mesodermal defects | VACTERL: vertebral defects, anal atresia, cardiac defects, tracheo-esophageal fistula, renal defects, limb defects (bone and muscle) |
serous linings of body cavities | mesoderm |
craniopharyngioma - defect in what? what kind of tumor? describe it. | benign rathke's pouch tumor with cholesterol crystals and calcifications |
rathke's pouch tumor with cholesterol crystals and calcifications | craniopharyngioma - benign |