Embryologic derivatives Flashcards
Epidermis
Surface ectoderm
Adenohypophysis (from Rathke pouch)
Surface ectoderm
Lens of eye
Surface ectoderm
Epithelial linings of oral cavity
Surface ectoderm
Sensory organs of ear
Surface ectoderm
Olfactory epithelium
Surface ectoderm
Anal canal below pectinate line
Surface ectoderm
Parotid, sweat, mammary glands
Surface ectoderm
Brain (neurohypophysis, CNS neurons, oligodendrocytes, astrocytes, ependymal cells, pineal gland)
Neuroectoderm
Retina
Neuroectoderm
Spinal cord
Neuroectoderm
What embryologic layer is the neural crest part of?
Neural crest
PNS (dorsal root ganglia, cranial nerves, autonomic ganglia, Schwann cells)
Neural crest
Melanocytes
Neural crest
Chromaffin cells of adrenal medulla
Neural crest
Parafollicular (C) cells of thyroid
Neural crest
Pia and arachnoid
Neural crest
Bones of the skull
Neural crest
Odontoblasts
Neural crest
Aorticopulmonary septum
Neural crest
Endocardial cushions
Neural crest
Neural crest derivatives pneumonic
MAGIC COPS Melanocytes Aorticopulmonary septum Ganglia (Enteric, dorsal root, autonomic) Iris Chromaffin cells Cranial nerves Odontoblasts/ossicles Parafollicular cells Sclerae
Muscle
Mesoderm
Bone
Mesoderm
Connective tissue
Mesoderm
Serous linings of body cavities (Peritoneum)
Mesoderm
Spleen
Mesoderm
What is the spleen derived from?
Foregut mesentary
Cardiovascular structures
Mesoderm
Lymphatics
Mesoderm
Blood
Mesoderm
Wall of gut tube
Mesoderm
Upper vagina
Mesoderm
Kidneys
Mesoderm
Adrenal cortex
Mesoderm
Dermis
Mesoderm
Testes
Mesoderm
Ovaries
Mesoderm
What induces the ectoderm to form the neuroectoderm?
Notochord
What is the postnatal derivative of the notochord?
Nucleus pulposus
Gut tube epithelium (including anal canal above the pectinate line)
Endoderm
Most of urethra and lower vagina (derived from urogenital sinus)
Endoderm
Luminal epithelial derivatives (eg lungs, liver, gallbladder, pancreas, eustachian tube, thymus, parathyroid, thyroid follicular cells)
Endoderm
