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Endocrine System (Endocrine Organs (Parathyroid gland (not directed by…

- - - - increases rate of metabolism in conversion of nutrients (O2--> energy
    - - active only in children
      - decreases activity of osteoclasts
  - - - 1) Zona Glomerulosa
        
        outermost layer
        
        secretes mineralocorticoids that keep the kidneys reabsorbing water and sodium
      - 2) Zona Fasciculata
        
        secretes glucocorticoids that help keep blood glucose levels normal
        
        helps us deal with stress
      - 3) Zona Reticularis
        
        deepest zone
        
        secretes glucocorticoids and androgen into other tissues to become testosterone and estrogen
- - - - neurotransmitter
  - - - hormone
  - - - target cells
    - - from axon terminal to synapse
      - binds with a target cells, and doesn't have to travel
  - - - various target cells throughout the body
    - - all three muscle types
      - glands
  - - - depends, seconds, hours, or even days
    - - milliseconds
  - - - hours or days
    - - milliseconds