Anatomy Exam 5

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24 Terms

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The GI tract is composed of

4 tunics(layers)

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Tunics of the Digestive System(deep to superficial)

Mucosa, Submucosa, Muscularis, Serosa

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2 Regions of the oral cavity

vestibule and oral cavity proper

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Vestibule

Space in front of entrance( between lips and teeth )

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Hard Palate

Anterior 2/3, palatine processes of maxillae bones and palatine bones

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Soft Palate

Posterior 2/3. muscular structure

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Uvula

extends posteriorly from soft palate, elevates during swallowing to close off posterior entrance to nasopharynx

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Tongue

Primary skeletal muscle

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Lingual Frenulum

Attach underside of tongue to palate

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Tongue function

move food around oral cavity, mix food with saliva and assist in swallowing

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Salivary Glands

produce and secrete saliva. Moistening ingested materials to become slick bolus. Moistens, cleans and lubricates oral cavity structures . Dissolves food so taste receptors can be stimulated

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Parotid Salivary glands

secrete 25-30% of total saliva, largest, parotid ducts run parallel to zygomatic arch pierces buccinator muscle before opening into mouth

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Submandibular Salivary Gland

produces most saliva, inferior to the mandible

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Where does the submandibular duct open

in floor of mouth next to teeth

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