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Spinal Anatomy
Embryology
Question | Answer |
---|---|
subgroups of mesoderm | Paraxial, Intermediate, Head, Lateral Plate |
Paraxial - somatic | skeletal muscles, ligaments, tendons |
31 somites | mesodermal paraxial |
Paraxial - splanchnic | smooth muscle of organs |
Intermediate | urogenital system, kidneys |
head | skull, muscles, dentine, CT |
lateral plate | adrenal cortex, blood and lymphs, cardiovascular and lymphs |
Ectoderm subgroups | surface ectoderm, neuroectoderm (neural tube, neural crest) |
surface ectoderm | epidermis, skin, lens of eye, cornea, hair, nails, ant. pituitary, enamel |
neuroectoderm - neural tube | post. pituitary, retina, CNS, pineal body, oligodendrocytes |
neuroectoderm - neural crest | DRG, ANS, parafollicular cells of thyroid, adrenal medulla, sympathetic chain ganglion, PNS, Schwann cells |
intramembranous ossification | clavicle and all float bones of skull |
enchondral ossification | ossification of all other bones |
intramembranous and enchondral ossification | scapula |
stomodeum | mouth |
back of throat to 1st 1/3 of duodenum | foregut |
2nd 2/3 duodenum to 1st 2/3 transverse colon | midgut |
last 1/3 transverse colon to anus | hindgut |