Animals & Humans Digestion & Excretion.

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Presentation transcript:

Animals & Humans Digestion & Excretion

Digestion/Obtaining Nutrients - Animals Heterotrophs Filter feeders Detritivores Carnivores Herbivores

Intracellular digestion Extracellular digestion Gastrovascular cavity Extracellular digestion Digestive tract – mouth, stomach, intestines

Specialized teeth and mouthparts

Length of digestive system Crop, gizzard Rumen

Digestion/Obtaining Nutrients - Humans Heterotrophs Digestion starts in the mouth Teeth and saliva

Digestive tract - mouth, stomach, small and large intestines Digestion and absorption occurs Liver, gall bladder, pancreas produce chemicals that assist in digestion.

Enzymes Acids Villi

Excretion - Animals Removal of wastes (such as urea & ammonia, solid undigestable material, excess water, carbon dioxide) Diffusion Flame cells Nephridia

Malpighian tubules Cloaca Gills Intestines, anus Kidneys

Excretion - Humans Large intestine, rectum, anus Lungs Skin

Kidneys – filter waste from blood Ureters, bladder, urethra

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