Digestion ppt

Vestibulespacebetweencheekandteeth

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Unformatted text preview: umerous, foamy goblet cells that populate the epithelium of the crypts. Secretion of mucus from goblet cells is elicited primarily by irritating stimuli rather than in response to hormones Mouth and Associated Organs Mouth and Associated Organs Food enters the GI tract at the mouth. It is chewed, manipulated by the tongue, and moistened with saliva. Mouth has two parts: 1. vestibule – space between cheek and teeth. 2. oral cavity proper – space internal to the teeth. Tongue ­ skeletal muscle ­ mixes food with saliva into a compact mass known as a BOLUS. ­ LINGUAL FRENULUM attaches the tongue to the floor of the mouth and prevents posterior movement of the tongue. Salivary Glands Salivary Glands When you dissect your cat, you will notice two muscles on the inside of the cheek. The DIGASTRIC MUSCLE opens the jaw. The MASSETER MUSCLE closes the jaw. The masseter inserts on the mandible. Superficial to part of the masseter and anterior to the ear is the large PAROTID GLAND. This gland produces SALI...
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