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Digestive and Urinary Systems

Digestive and Urinary Systems. Digestive System. Functions: Ingestion Secretion Mixing and propulsion Digestion Absorption Defecation. Digestion. 2 types Mechanical Physically breaking food into smaller pieces Performed by: Teeth/mouth Stomach churning Small intestine squeezing

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Digestive and Urinary Systems

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  1. Digestive and Urinary Systems

  2. Digestive System • Functions: • Ingestion • Secretion • Mixing and propulsion • Digestion • Absorption • Defecation

  3. Digestion • 2 types • Mechanical • Physically breaking food into smaller pieces • Performed by: • Teeth/mouth • Stomach churning • Small intestine squeezing • Chemical • Breaking the molecules of food into smaller pieces with enzymes • Performed by: • Enzymes in mouth, stomach, small intestine

  4. Main Components • Alimentary canal – tube from mouth to anus • mouth/teeth/tongue – begins digestion • Esophagus – leads to stomach • Stomach – churns food • Small intestine – absorption of nutrients • Large intestine – removal of water, storage for waste • Anus – elimination of waste

  5. Accessory Components • Liver • Produces bile – enzyme that breaks down lipids • Gall bladder • Stores bile • Pancreas • Secretes digestive enzymes – break down carbs, proteins

  6. Components

  7. Urinary System • Functions: • Regulate blood ion concentration • Regulate salt concentration • Regulate blood pH • Regulate body water concentration • Excretion of wastes

  8. Components • Kidneys – filter waste and water out of blood • Ureters – passageway for urine to bladder • Bladder – stores urine • Urethra – passageway for urine out of the body

  9. Components

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