Page 41 - Science Course 2 (Book 1)
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Mo2-L2a:  Digestive System: Absorption and Elimination





                      Key Concept                            Mo2-L2b     What Can Help Maintain
            Digestive System: Absorption and Elimination                 Homeostasis?

          How does the body transport and process oxygen   KEY CONCEPTS:
                          and wastes?                      1. How does the body coordinate movement and
                                                               respond to stimuli?
                                                           2. How do feedback mechanisms help maintain
                                                                homeostasis?



                                                                       Vocabulary A-Z

                                                                       Let us learn some vocabulary


                                                           negative feedback
                                                           a control system where the effect of a hormone
                                                           inhibits further release of the hormone; sends a
                                                           signal to stop a response.



                                                                     Body
                                                                   too warm
                                                            Bodywarms  +       –   Sweating



                                                                     Body
                                                                     cooler

                                                                                          Body
                                                                                        too cold
                                                                                Bodycools  +       –    Shivering


                                                                                          Body
                                                                                        warmer
                          SUMMARY

           Digestive System: Absorption and Elimination
        Muscles that surround the stomach help move         positive feedback
                  food to the small intestine.              a control system in which the effect of a hormone

                                                            causes more of the hormone to be released; sends
                                                            a signal to increase a response.



                                                                 Increase your           Improves
                                                                   physical                your
                                                                   strenght            psychological
                                                                                         condition





                                                                                        Helps you
                                                                   Reduce pain           deal with
                                                                    symptoms          your emotional
                                                                                          issues




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