Biology: hormones and homeostasis

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iGCSE Biology Mindmap am Biology: hormones and homeostasis, erstellt von cleo.moseley9 am 19/02/2015.
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Zusammenfassung der Ressource

Biology: hormones and homeostasis
  1. hormones
    1. testosterone
      1. testes
        1. controls male puberty, development of sperm
      2. oestrogen
        1. ovaries
          1. controls female puberty, controls menstrual cycle
        2. insulin
          1. pancreas
            1. controls blood sugar levels
              1. keeps it down
          2. adrenaline
            1. adrenal glands
              1. controls body for action
                1. skin gets pale
                  1. rapid breath and heart rate
                    1. increase in energy
                      1. o2 and glucose intake increases and it it diverted to muscles
                    2. blood diverted from digestive system
                      1. glycogen in muscles are converted to glucose
                    3. chemical messengers produced by endocrine glnds
                      1. transported via blood to target organs
                    4. homeostasis
                      1. maintenance of constant internal environment
                        1. glucose, water and temperature must be kept the same
                        2. normal blood glucose
                          1. eat meal
                            1. pancreas releases insulin
                              1. glucose regulation, liver converts glucose to glycogen
                                1. normal blood glucose
                            2. exercise
                              1. pancreas releases glycogen
                                1. liver converts glycogen to glucose
                                  1. normal blood glucose
                            3. negative feedback
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