. Cunningham's Text-book of anatomy. Anatomy. 1143 THE DIGESTIVE SYSTEM. 2. In the neck, laterally, it is in contact with the superior part of the thyreoid gland, the carotid sheath, and especially the common and external carotid arteries, and, more posteriorly, the internal carotids. The branches arising from the inferior part of the external carotid are also in close relation to the pharyngeal wall, viz., the superior thyreoid and lingual arteries in the lower part, while the external maxillary artery, as it passes under the digastric and stylo-hyoid muscles, comes into contact with the supe
. Cunningham's Text-book of anatomy. Anatomy. 1143 THE DIGESTIVE SYSTEM. 2. In the neck, laterally, it is in contact with the superior part of the thyreoid gland, the carotid sheath, and especially the common and external carotid arteries, and, more posteriorly, the internal carotids. The branches arising from the inferior part of the external carotid are also in close relation to the pharyngeal wall, viz., the superior thyreoid and lingual arteries in the lower part, while the external maxillary artery, as it passes under the digastric and stylo-hyoid muscles, comes into contact with the superior constrictor, and the ascending pharyngeal artery runs upwards by the side of the pharyngeal wall. 3. The relations of the cranial portion are more complex, but are of great importance. Eeference to Fig. 906 will help to elucidate them. At the upper Internal jugular vein Hypoglossal nerve Accessory nerve Digastric muscle Stylo-hyoid Glosso- pharyngeal nerve Parotid gland Posterior facial vein External carotid, artery Styloglossus Ascendin Internal carotid artery Vagus nerve Sympathetic trunk Ascending pharyngeal artery Dens. Retro-pharyngeal lymph gland Superior constrictor muscle Pharyngo-palatine arch Palatine tonsil Pharyngo-epiglottic fold Glosso-palatine arch Vallate papillae Raphe of tongue Conical papilla; Fungiform papilla Buccinator Fungiform papilla Fig. 906.—Horizontal Section through Mouth and Pharynx at the Level of the Palatine Tonsils. The stylopharyngeus, which is shown immediately to the medial side of the external carotid artery, and the prevertebral muscles, are not indicated by reference lines. part, the wall of the pharynx is related to the internal pterygoid muscles, separated from them by the levator and tensor veli palatini muscles. As each internal pterygoid passes posteriorly and downwards to its insertion, it diverges away from the pharynx, and a triangular space is left between its medial surface and the wall of the pharynx. The styloid process
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