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Carnegie Stage Section
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C-1 spinal nerve, C-1 vertebra (atlas), C-2 spinal ganglion, C-2 ventral root, atlanto-occipital joint, auricle, basi-occipital (basal plate), dens of C-2 vertebra (axis) region, edge of tongue, facial nerve (CN VII), falx cerebri region, head mesenchyme, hippocampal thickening, interventricular foramen, lateral ventricle, nasopharynx, notochord, optic chiasma (chiasmatic plate), optic groove, optic stalk (CN II), optic ventricle, oropharynx, paraphysis, spinal accessory nerve (CN XI), stem of adenohypophysis, subarachnoid space, third ventricle, vertebral artery
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Carnegie Embryo #4430   |   Location: 12-6

Keywords: C-1 spinal nerve, C-1 vertebra (atlas), C-2 spinal ganglion, C-2 ventral root, atlanto-occipital joint, auricle, basi-occipital (basal plate), dens of C-2 vertebra (axis) region, edge of tongue, facial nerve (CN VII), falx cerebri region, head mesenchyme, hippocampal thickening, interventricular foramen, lateral ventricle, nasopharynx, notochord, optic chiasma (chiasmatic plate), optic groove, optic stalk (CN II), optic ventricle, oropharynx, paraphysis, spinal accessory nerve (CN XI), stem of adenohypophysis, subarachnoid space, third ventricle, vertebral artery

Source: The Virtual Human Embryo.