1409 BIOLOGY FiB03 Digestive System.doc

1409 BIOLOGY FiB03 Digestive System.doc - 1 03 Digestive...

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1 03 Digestive System Suspension feeders - extract food from surrounding WATER ; sponge, whale, hydra Substrate feeders - live on their FOOD and eat through the food; earthworms Fluid feeders - drink only FLUIDS ; mosquitoes. Bulk feeders - eat large pieces of food; HUMANS . Rumination - regurgitating food and re-chewing it to break down cellulose of PLANTS ; cows. Herbivores - eat only plants; often have FLAT teeth for grinding; cows. Carnivores - eat only ANIMALS ; often have sharp, pointy teeth for ripping meat; cats. Omnivores - eat both plants and animals; often have both sharp, pointy teeth and flat teeth; HUMANS . Digestion - breaking food into small molecules to enter CELLS . 1. Ingestion - you put FOOD in your mouth. 2. Digestion - breaking food into SMALL molecules. 3. Absorption - getting FOOD into the body's cells. 4. Elimination - getting RID of undigested material. The MOUTH is the first organ of the digestive system. Hard palate - upper, FRONT portion of mouth. Soft palate - UPPER , back portion of mouth.
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  • Spring '16
  • Christina Snaples
  • Biology

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