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Digestive System

Digestive System. Digestive System. Three functions :. 1) Take in and break down food. 2) Absorb nutrients. 3) Remove solid waste. Types of Digestion:. Mechanical Digestion: food is broken down by grinding action of teeth and squeezing of muscles

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Digestive System

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  1. Digestive System

  2. Digestive System Three functions : 1) Take in and break down food 2) Absorb nutrients 3) Remove solid waste

  3. Types of Digestion: Mechanical Digestion: food is broken down by grinding action of teeth and squeezing of muscles Chemical Digestion: food is broken down by action of chemicals like hydrochloric acid and enzymes (e.g. saliva)

  4. Four Stages of Digestion: Ingestion Digestion Absorption Egestion

  5. Four Stages of Digestion Ingestion: mouth and teeth grind food. Peristalsis (muscular contractions) pushes food down the esophagus. • Digestion: stomach turns solid food into chyme (liquid goop) and sends it to the small intestine.

  6. Absorption: most nutrients are absorbed in the small intestine. Egestion: waste material is sent to the large intestine where water is absorbed. Final waste product (feces) is released through the anus!

  7. Main organs are shown in RED! Digestive System mouth pharynx esophagus liver stomach gall bladder pancreas Large Intestine Small intestine Appendix Rectum Anus

  8. Sit back and enjoy the following clip from the “INCREDIBLE HUMAN MACHINE” which takes us on an inside journey focusing on digestion! An inside look at the digestive system!

  9. Assignment to hand in at end of class: Use the textbook to complete the questions on the back of your note sheet. Complete the Digestive System Colouring Worksheet. Reminders: Quiz Tuesday Flip book due Wednesday

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