A section through the caudal part of the secondary palate, junction of the medulla oblongata and the spinal cord and the C-1 spinal ganglion.
Observe:
1. The lower part of the eye.
2. The dorsal part of the mandible and its relation to the first arch cartilage and parotid gland.
3. The unfused uvula and soft palate parts of the secondary palate.
4. The relations of the nerves, ganglia, blood vessels and muscles at the base of the skull.
5. The C-1 spinal ganglion which usually disappears in the adult.
Keywords: C-1 spinal ganglion, C-1 spinal nerve, C-1 vertebra (atlas), artifact(s), cartilage of pharyngeal arch 2, central canal, dens of C-2 vertebra (axis), ependymal layer, external carotid artery, glossopharyngeal nerve (CN IX), greater palatine nerve, grey matter, hypoglossal nerve (CN XII), inferior ganglion of vagus nerve (CN X), inferior oblique muscle, inferior rectus muscle, infra-orbital nerve, internal carotid artery, internal jugular vein, junction of spinal cord and medulla oblongata, longus capitis muscle, longus colli muscle, lower eyelid fold, mandible, medial pterygoid muscle, nasopharynx, obliquus capitis superior muscle, orbicularis oculi muscle, parotid gland, pharyngeal arch 1 cartilage (Meckel), secondary palate, spinal accessory nerve (CN XI), sternocleidomastoid muscle, stylopharyngeus muscle, superior pharyngeal constrictor muscle, superior sympathetic ganglion, unfused uvula and secondary palate, upper eyelid fold, vertebral artery, white matter
Source: Atlas of Human Embryos.