File:Stage 22 vomeronasal organ.jpg

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Human Embryo (stage 22) Vomeronasal Organ

Human vomeronasal organ develops though later many structures such as the vomeronasal nerve, accessory olfactory bulb and chemoreceptor cells within the organ are lost. Therefore it is not clear whether there is any postnatal neuroendocrine role for this structure.^[1]

Links: unlabelled image version | Carnegie stage 22 | Week 8

Historic Embryology - Smell
Historic Embryology: 1902 Olfactory Structures \| 1910 cavum nasi \| 1940 Olfactory and Accessory Olfactory Formations \| 1941 Olfactory nerve \| 1944 Jacobson’s organ \| 1980 Staged embryos

Selected Embryo Histology - Week 8 (Stage 22)
Selected Human Embryo Histology - Stage 22 (week 8) developing cortex labeled central nervous system and ventricles central nervous system and ventricles measured image nose and eyes eye optic nerve lens lens and pigmented epithelium lens and pigmented epithelium head region measured developing cochlea pituitary pituitary measured pituitary vertebra and spinal cord mesonephric ducts and bladder developing testis developing testis labeled developing testis developing testis labeled midgut herniation pelvic region - rectum and bladder pelvic region - rectum and bladder labeled pelvic region - rectum pelvic region - rectum labeled Aorta filled with red blood cells Lungs and thymus Dorsal aorta Placental blood vessels
Links: Carnegie stage 22 \| Week 8