BIO 251 Lecture Notes - Tensor Veli Palatini Muscle, Frenulum Of Tongue, Genioglossus
Document Summary
Action: tenses the soft palate, opens the eustachian tube during yawning or chewing. Muscles of the floor of the tongue: genioglossus muscle. Most of the body of the tongue, originates on the superior mental spines. When it contracts, it pulls the tongue forward, protruding the tongue: intrinsic muscles. Makes all the crazy shapes it can do. *the tongue sits on the mylohyoid and geniohyoid muscles. **lingual frenulum is the connection between the tongue and the oral floor. Action: elevates the back of the tongue, brings soft palate and back of the tongue together: styloglossus. Insertion: back and inferior margin of the tongue. Action: elevates the back of the tongue, retracts tongue: hyoglossus. Parotid glands: in front of the ear, it ducts open into the oral cavity. Submandibular gland: is mostly tucked under the mandible, but some of it may be palpable, has a duct and a single opening at the front of the folds, the sublingual papillae.
