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Developing Cochlea

Section through turns in the developing cochlea human embryo week 8 (Carnegie stage 22).

otic capsule - surrounding the developing inner ear is the cartilage, later to ossify, forming part of the chondrocranium base of the developing skull.
spiral ganglia - cochlear component of the ganglia (vestibulocochlear nerve, 8th cranial nerve, CN VIII) top of the image.
internal carotid artery - circular blood vessel lying between developing cochlea and auditory tube.
auditory tube - cavity at bottom of the image.

Links: full image | cochlea | Inner Ear Development | Hearing - Neural Pathway | Carnegie stage 22

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