Quicktime Development Animation - Adrenal Medulla

width=720px|height=560px|controller=true|autoplay=false</qt>

Adrenal Medulla Development This animation shows the dual embryonic origins of the adrenal development. Adrenal Cortex mesothelium origin, epithelium lining the body cavity at the site of adrenal development Late Fetal Period - differentiates to form cortical zones Birth - zona glomerulosa, zona fasiculata present Year 3 - zona reticularis present Adrenal Medulla neural crest origin, migrate adjacent to coelomic cavity, initially uncapsulated and not surrounded by fetal cortex, cells have neuron-like morphology 2 cell types - secrete epinepherine (adrenaline) 80%; secrete norepinepherine (noradrenaline* 20% Links: Quicktime | Quicktime version

Template:Quicktime

• Fetal Adrenals - fetal cortex later replaced by adult cortex
• Week 6 - fetal cortex, from mesothelium adjacent to dorsal mesentery; Medulla, neural crest cells from adjacent sympathetic ganglia
• Adult cortex - mesothelium mesenchyme encloses fetal cortex