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Atlas of Human Embryos Chapter   Figure

L-1 ventral primary ramus, S-3 spinal ganglion, T-10 spinal ganglion, T-11 spinal nerve, aortic bifurcation, axial artery, dermatome remnant, dorsal aorta, lower limb bud, marginal vein, median sacral artery, metanephrogenic mass, myotome, notochord, postcardinal vein, primitive meninx, rib primordium (T-12), sacral plexus, sclerotome, subcostal nerve (T-12), sympathetic neuroblasts, thigh mesoderm

A section through the origin of the median sacral artery.

Observe:
1. Sympathetic neuroblasts on the surface of the dorsal aorta.
2. The sacral plexus in the proximal part of the lower limb bud.
3. The dorsal edge of the metanephrogenic mass.


Keywords: L-1 ventral primary ramus, S-3 spinal ganglion, T-10 spinal ganglion, T-11 spinal nerve, aortic bifurcation, axial artery, dermatome remnant, dorsal aorta, lower limb bud, marginal vein, median sacral artery, metanephrogenic mass, myotome, notochord, postcardinal vein, primitive meninx, rib primordium (T-12), sacral plexus, sclerotome, subcostal nerve (T-12), sympathetic neuroblasts, thigh mesoderm

Source: Atlas of Human Embryos.