Keywords: C-3 / C-4 intervertebral disc, C-4 spinal nerve, C-5 spinal ganglion, centrum of C-4 vertebra, cornea, dorsal root(s), external carotid artery, fusion region between cerebral vesicle and diencephalon, hypoglossal nerve (CN XII), hypoglossus muscle blastema, internal carotid artery, jugular lymph sac, laryngeal condensation, laryngeal pharynx, lateral ventricle, marginal ridge, maxillary venous plexus, middle cerebral artery, neural arch of C-5 vertebra, optic chiasma (chiasmatic plate), orbitosphenoid, origin of optic nerve (CN II), posterior digastric muscle blastema, roof plate of diencephalon, sternocleidomastoid muscle, submandibular groove, supraclavicular nerve, trapezius muscle, upper eyelid, ventral root, zona limitans intrathalamica
Source: The Virtual Human Embryo.