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Atlas of Human Embryos Chapter   Figure

C-2 dorsal primary ramus, C-2 spinal ganglion, angle of stomodeum, anterior cerebral plexus, aortic arch 3, branchial arch 2, branchial arch 3, cartilage of branchial arch 2 (Reichert's), chiasmal area, communication of C-1 ventral primary ramus and hypoglossal nerve (CN XII), epiglottis, glossopharyngeal nerve (CN IX), hypothalamus, inner layer (visual), intraretinal space (optic vesicle cavity), junction of hypophyseal pouch and stomodeum, lens vesicle, loose mesenchyme, notochord, opercular fold, optic cup, optic groove, optic stalk, outer layer (pigmented), pharyngeal pouch 2, premuscle mass of tongue, primitive maxillary vein, primitive pharynx, sclerotome, spinal accessory nerve (CN XI), sternocleidomastoid / trapezius premuscle mass

A section through the premuscle mass of the tongue and the junction of the hypophyseal pouch with the stomodeum.

Observe:
1. The spinal accessory nerve in the sternocleidomastoid-trapezius premuscle mass.
2. The epiglottis projecting into the primitive pharynx.
3. The termination of the glossopharyngeal nerve near the tongue surface.
4. The opercular fold and cartilage of the second branchial arch.
5. The optic cup, stalk and chiasmal area of the hypothalamus.


Keywords: C-2 dorsal primary ramus, C-2 spinal ganglion, angle of stomodeum, anterior cerebral plexus, aortic arch 3, branchial arch 2, branchial arch 3, cartilage of branchial arch 2 (Reichert's), chiasmal area, communication of C-1 ventral primary ramus and hypoglossal nerve (CN XII), epiglottis, glossopharyngeal nerve (CN IX), hypothalamus, inner layer (visual), intraretinal space (optic vesicle cavity), junction of hypophyseal pouch and stomodeum, lens vesicle, loose mesenchyme, notochord, opercular fold, optic cup, optic groove, optic stalk, outer layer (pigmented), pharyngeal pouch 2, premuscle mass of tongue, primitive maxillary vein, primitive pharynx, sclerotome, spinal accessory nerve (CN XI), sternocleidomastoid / trapezius premuscle mass

Source: Atlas of Human Embryos.