Keywords: C-4 / C-5 intervertebral disc, C-5 spinal nerve, C-6 dorsal root, C-6 spinal ganglion, centrum of C-4 vertebra, cerebral vesicle (telencephalon), ciliary ganglion, cornea, dorsal thalamus, epithalamus, external acoustic meatus, fusion region between cerebral vesicle and diencephalon, hyoid body condensation, hypothalamus (diencephalon), inferior pharyngeal constrictor muscle, interventricular foramen, intraretinal space (optic vesicle cavity), jugular lymph sac, lateral ventricle, marginal ridge, maxillary venous plexus, ophthalmic nerve (CN V₁), optic cup cavity, optic nerve (CN II), optic ventricle, parotid gland bud, pineal bud, precardinal vein (internal jugular vein), splenius muscle, submandibular ganglion, submandibular gland bud, trapezius muscle, ventral thalamus (diencephalon)
Source: The Virtual Human Embryo.