digestivesystem

digestivesystem - 11/8/2011 Digestive System Chapter 12...

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11/8/2011 1 Digestive System Chapter 12 Digestive System Components Mouth oropharyngeal cavity in fish buccal (oral) cavity in tetrapods Pharynx division between digestion & respiration Esophagus muscular tube leading to stomach Stomach chamber for chemical & mechanical digestion processing of food Intestines absorption of nutrients Accessory Glands liver, gall bladder, pancreas Mouth & Oral Cavity Tongue highly variable with a variety of functions Oral Glands - aid in digestion Teeth - homologous to dermal denticals of fish acrodont/pleurodont/thecodont polyphyodont/diphyodont/monodont homodont/heterodont incisors canines premolars molars (carnassial/selenodont/lophodont/bunodont) Epidermal teeth - made of keratin
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11/8/2011 2 Gut Wall Morphology 1) mucosa formed from glandular epithelium, connective tissue & smooth muscle fibers may be highly vascularized
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This note was uploaded on 01/17/2012 for the course BIOL 306 taught by Professor Phillipd.sudman during the Spring '12 term at Tarleton.

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digestivesystem - 11/8/2011 Digestive System Chapter 12...

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