(BQ) Continued part 1, part 2 of the document Head & neck - Concise illustrated anatomy (Volume 3) has contents: Scalp and diploic and emissary veins, muscles of facial expression, parotid gland, facial nerve, and blood vessels of face, submandibular region, tongue and paralingual space,. and other contents. Invite you to refer. | Head & neck - Concise illustrated anatomy (Volume 3): Part 2 173 SECTION Palate and Palatine Tonsil I. General Features of the Palate (Fig. ) A. Forms arched (dome-shaped) roof of mouth and floor of nasal cavities 1. Separates oral cavity from nasal cavities and nasopharynx (part of pharynx superior to soft palate) 2. Nasal surface covered by respiratory mucosa; oro- and nasopharyngeal surface by oral mucosa (heavy with glands) B. 2 parts 1. Hard palate: immovable, anterior 2/3 2. Soft palate: movable in order to close off nasopharynx during swallowing or phonation C. Sensory nerve supply: greater palatine nerve for sensory supply to gingivae and hard palate and lesser palatine nerve to soft palate; anteriormost part of hard palate receives sensory branches of nasopalatine D. Motor nerve supply: all muscles of soft palate are supplied by vagus nerve (CN X) through pharyngeal plexus of nerves, except tensor veli palatini (supplied by CN V3) E. Parasympathetic nerve supply 1. Presynaptic fibers: in greater petrosal branch of facial nerve (CN VII), through nerve of pterygoid canal, to pterygopalatine ganglion 2. Postsynaptic fibers: travel with sensory nerves to mucous glands of hard and soft palate F. Arteries: descending palatine artery, a terminal branch of maxillary artery, sends lesser and greater palatine branches to supply soft and hard palate; ascending palatine branch of facial artery also helps G. Veins: tributaries of pterygoid venous plexus II. Hard Palate A. Consists of palatine process of maxillary bones anteriorly and horizontal part of palatine bones B. Covered by mucous membrane, which is immovably fixed to periosteum with no submucosa layer C. Palatine glands: large mucous glands embedded in mucosa of posterior part of hard palate III. Soft Palate A. Location: moveable fibromuscular fold forming posterior projection from hard palate as far as posterior pharyngeal .
