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Atlas of Human Embryos Chapter   Figure

C-1 vertebra (atlas), C-2 spinal ganglion, cartilage of pharyngeal arch 2, dens of C-2 vertebra (axis), dorsal median sulcus, ectoderm, enamel organ, epiglottis, external carotid artery, fusion line of lateral palatine processes, fusion line of palatine process and nasal septum, genioglossus muscle, grey matter, hypoglossal nerve (CN XII), inferior ganglion of vagus nerve (CN X), inferior nasal concha, infra-orbital lamina, internal carotid artery, junction of internal jugular vein and jugular lymph sac, labiogingival groove, longissimus muscle, longus muscles, maxilla, middle pharyngeal constrictor muscle, nasal capsule, nasal cavity (nasal sac), obliquus capitis inferior muscle, palatine fossa, parotid duct, pharynx, posterior digastric and stylohyoid muscles, secondary palate, semispinalis capitis muscle, septal cartilage, splenius muscle, sternocleidomastoid muscle, styloglossus muscle, superior sympathetic ganglion, trapezius muscle, ventral median fissure, vomeronasal cartilage, white matter, zygomaticus major muscle

A section through the rostral part of the nasal cavity and secondary palate.

Observe:
1. The fusion lines between the lateral palatine process and nasal septum.
2. The well-developed genioglossus muscle in the tongue.
3. The facial muscles and parotid duct beneath the ectoderm.
4. The superior sympathetic ganglion, inferior vagal ganglion and internal and external carotid arteries between the sternocleidomastoid muscle and the pharynx.
5. The junction of the jugular lymph sac and the internal jugular vein.


Keywords: C-1 vertebra (atlas), C-2 spinal ganglion, cartilage of pharyngeal arch 2, dens of C-2 vertebra (axis), dorsal median sulcus, ectoderm, enamel organ, epiglottis, external carotid artery, fusion line of lateral palatine processes, fusion line of palatine process and nasal septum, genioglossus muscle, grey matter, hypoglossal nerve (CN XII), inferior ganglion of vagus nerve (CN X), inferior nasal concha, infra-orbital lamina, internal carotid artery, junction of internal jugular vein and jugular lymph sac, labiogingival groove, longissimus muscle, longus muscles, maxilla, middle pharyngeal constrictor muscle, nasal capsule, nasal cavity (nasal sac), obliquus capitis inferior muscle, palatine fossa, parotid duct, pharynx, posterior digastric and stylohyoid muscles, secondary palate, semispinalis capitis muscle, septal cartilage, splenius muscle, sternocleidomastoid muscle, styloglossus muscle, superior sympathetic ganglion, trapezius muscle, ventral median fissure, vomeronasal cartilage, white matter, zygomaticus major muscle

Source: Atlas of Human Embryos.