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A 22 year old male with possible testicular shrinkage worries about his…

- - - - TH (T3+T4) - increase metabolic rate
    - - Calcitonin - reduce blood calcium levels
  - - - Zona Glomerulosa
        
        Mineralocorticoids - increases sodium retention
      - Zona Fasciculata
        
        Glucocorticoids - participate in stress response + increase nutrients in blood
      - Zona Reticularis
        
        Androgens - Sex characteristics
    - - EP/NE - Fight/flight
  - - - Glucagon - increases blood glucose levels
      - Insulin - reduces blood glucose levels
  - - - Estrogen - Sex characteristics
    - - Progesterone - thickens lining of uterus
  - - - Inhibin - inhibits FSH
    - - Testosterone - secondary sex char
- - - - From there, FSH and LH travel through the bloodstream to the testes
        
        FSH encourages sperm production and LH encourages testosterone production