The Digestive System

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The Digestive System

• VS 223
• Dr. Noland

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Functions

• Prehension
• Mechanical breakdown
• Chemical digestion
• Absorption
• Elimination

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Oral Cavity

• Lips
• Tongue
• Teeth
• Hard Palate
• Soft Palate
• Oropharynx

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Pharynx

• Function-Commen passageway for food and air
• Has 6 openings
• Oropharynx
• Nasopharynx
• Eustachian Tubes (2)
• Larynx
• esophagus

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Roarers
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Esophagus

• Function-
• Contains two layers of muscle
• Peristalsis and segmentation

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Non-Ruminant Stomach

• Function-
• Divided into 5 areas
• Cardia
• Fundus
• Body
• Antrum
• Pylorus

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Ruminant Stomach

• Function-
• Divided into four chambers
• Rumen
• Reticulum
• Omasum
• Abomasum

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Swallowing

• Voluntary action propelling oral contents toward
  pharynx
• Involuntary contraction of pharynx
• Inhibition of respiration and glottic closure

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Ansa Spiralis
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Accessory Glands

• Salivary Glands
• Pancreas
• Liver

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Liver Architecture
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