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Digestive And excretory system

Digestive And excretory system. By Justin wade™. The four stages of digestion. Ingestion-Taking in nutrients Digestion-using physical and chemical means to break down food into small usable parts Absorption-pulling molecules into cells then into blood

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Digestive And excretory system

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  1. Digestive And excretory system By Justin wade™

  2. The four stages of digestion • Ingestion-Taking in nutrients • Digestion-using physical and chemical means to break down food into small usable parts • Absorption-pulling molecules into cells then into blood • 4. Egestion-the removal of waste food materials

  3. mouth • -Your mouth uses chemical and mechanical digestion • -Mechanical is when you use your teeth and tongue to chew • -The small pieces of food you chewed are called bolus • -saliva contains enzyme called amylase, which breaks down the bolus using chemical digestion http://www.nlm.nih.gov/medlineplus/mouthdisorders.html Tonsils Help prevent infection in nose Teeth Used for chewing food Tongue Helps swallow Opening of salivary gland

  4. Esophagus • -The pharynx is where your airway and the rest of your digestive system meet • -The epiglottis covers the airway tube • -When you swallow food the flap blocks the air way so the food goes to the stomach http://knowledgeserver.wordpress.com/2011/08/15/pharynx/

  5. stomach

  6. Small intestine

  7. Large intestine

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