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The paired submandibular glands are major salivary glands located beneath the floor of the mouth. They each weigh about 15 grams and contribute some 60–67% of unstimulated saliva secretion; on stimulation their contribution decreases in proportion as the parotid secretion rises to 50%. 〔Textbook And Color Atlas Of Salivary Gland Pathology Diagnosis And Management, Eric R. Carlson and Robert A. Ord, Wiley-Blackwell, 2008, page 3〕 ==Structure== Lying superior to the digastric muscles, each submandibular gland is divided into superficial and deep lobes, which are separated by the mylohyoid muscle:〔Human Anatomy, Jacobs, Elsevier, 2008, page 196〕 * The superficial lobe comprises most of the gland, with the mylohyoid muscle runs under it * The deep lobe is the smaller part Secretions are delivered into the Wharton duct or submandibular duct on the deep portion after which they hook around the posterior edge of the mylohyoid muscle and proceed on the superior surface laterally. The excretory ducts are then crossed by the lingual nerve, and ultimately drain into the sublingual caruncles (caruncula sublingualis) on either side of the lingual frenulum along with the major sublingual duct (Bartholin). The gland can be bilaterally palpated (felt) inferior and posterior to the body of the mandible, moving inward from the inferior border of the mandible near its angle with the head tilted forwards.〔Illustrated Anatomy of the Head and Neck, Fehrenbach and Herring, Elsevier, 2012, p. 155〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Submandibular gland」の詳細全文を読む スポンサード リンク
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