Digestive Sytem of Vertebrates
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Transcript of Digestive Sytem of Vertebrates
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DIGESTIVE SYTEM OF VERTEBRATES
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Digestion
•Lipids to Fatty Acids
•Proteins to individual Amino Acids
•Carbohydrates into simple sugar
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Phases of Digestion
Ingestion
Movement
Digestion
Absorption
Further digestion
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Digestive TractMouth (Oral Cavity)
Tongue
Parotid GlandSublingual GlandSubmandibular Gland
Salivary Glands
Esophagus
Liver
Gallbladder
Small Intestine•Doudenum•Jejunum•Ileum
Pharynx
Stomach
Pancreas
Spleen
Large Intestine•Transverse Colon•Ascending Colon•Cecum•Sigmoid Colon•Rectum•Appendix •Anal Canal
Anus
•Descending Colon
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Digestive Tracts of Vertebrates
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Oral Cavity
Fish Tetrapods
Mammalian
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Palate
•Primary Palate: internal nares lead into the oral cavity anteriorly.
•Secondary Palate: Nassal passages are located above the secondary palate and open at the end of the oral cavity
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Teeth
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Teeth
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Morphological Variations of Teeth
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Tongue
Amphibiansprimary tongue (or hypobranchial eminence) + glandular field (or tuberculum impar) ('stuffed' with hypobranchial musculature)
Reptiles and Mammalsprimary tongue + glandular field (or tuberculum impar) + lateral lingual swellings (more hypobranchial muscle)Birds lateral lingual swellings are suppressed & intrinsic muscle is usually lacking
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Tongue
Turtle
Crocodile
Ostrich
Whale
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TongueSnake
Insectivorous
Lizard
Amphibian
Humming Bird
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Tongue
Cat Dog Monkey
Human
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Tongue
Functions:•Capturing and Gathering food•Taste •Manipulating fluids and solids in the oral cavity•Swallowing •Thermoregulation •Grooming •Human speech
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Oral Glands
•Saliva
•Poison
•Anticoagulant
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Pharynx
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Pharynx
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Pharynx
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Esophagus
Bird
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Stomach
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Stomach
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Intestine
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Intestine
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Accessory Organs
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Cecum
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Thank You!