Muscles of the FOM (Floor of the Mouth) PDF
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London South Bank University
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Summary
This document provides tables summarizing the muscles of the floor of the mouth, including their origins, insertions, actions, nerve supply, and blood supply, along with a histological analysis of different areas of the mouth, including hard and soft palate. It includes the clinical appearance of different areas of the mouth and details the type of mucosa, epithelium, lamina propria and submucosa.
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Muscles of the FOM (Floor of the mouth) Name Origin Insertion Action Nerve Supply Blood Supply Elevates the floor of Mylohyoid line of Body of hyoid bone the mouth...
Muscles of the FOM (Floor of the mouth) Name Origin Insertion Action Nerve Supply Blood Supply Elevates the floor of Mylohyoid line of Body of hyoid bone the mouth and the Mylohyoid nerve (a Sublingual artery Mylohoid the mandible and midline raphe hyoid bone during branch of CN V3) and facial artery swallowing Sides of the Hypoglossus Body and greater tongue Depresses the tongue Hypoglossal nerve Lingual Artery Pulls hyoid bone Inferior mental Body of the hyoid anteriorly and C1 through the Geniohyoid spine of the bone superiorly, assists in hypoglossal artery Sublingual Artery mandible swallowing. Histological Structure Clinical Type of mucosa Epithelium Lamina Propria Submucosa Appearance Smooth moist surface, may have sublingual papillae, may show Presence of minor sialoliths (calcified Loose connective Non keratinized salivary glands, structures also tissue with glands Fom known as salivary Lining Mucosa stratified squamous (sublingual and sub generally loose epithelium connective tissue stones that form in mandibular glands) without significant fat. the salivary glands or their ducts) or oral mucosal lesions. Firm and keratinized Dense, regular Thin, may contain surface, may show Keratinized stratified connective tissue Hard Palate palatine rugae Masticatory Mucosa squamous epithelium (referred to as salivary glands (palatine glands) (Ridges of mucous palatine bone) membrane) Soft, flexible Non keratinized Loose connective Contains muscle, and surface, may show Soft Palate uvula and mucous Lining Mucosa stratified squamous tissue with more more prominent minor epithelium elastic Fibers. salivary glands. gland openings.
