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Homeostasis - Coggle Diagram

- - - - prairie dogs and other rodents
    - - e.g. nursing mom
    - - amenorrhea in athletes and dancers
  - - - increase food intake
      - GHRELIN
        
        produced in GI tract
        
        levels rise right before a meal
        
        stimulate feeding behavior
    - - decreases food intake
        
        INSULIN
        
        produced in beta cells of pancreas
        
        levels rise in response to food intake
        
        stimulates satiety
        
        function to put glucose into cells
        
        LEPTIN
        
        produced in adipose tissue
        
        dependent on range of need (overweight super hungry if don't eat because range is higher)
        
        functions to increase satiety (lower food intake) and to increase energy expenditure
    - - produced in alpha cells of pancreas
      - removes glucose from cells SO IT CAN BE USED
      - does not affect behavior though
    - - specific hungers for salt
      - released from adrenals
      - helps with reabsorption of sodium in kidneys
      - if levels deficient, seek out salty foods
- - - - not taking up glucose
        
        hyperglycemia
        
        triggers additional insulin secretion
    - - increased appetite
      - increased food intake
      - body weight gain
  - - - excess hunger/appetite
    - - if left untreated, can be toxic to nervous and circ systems
- - - - glucagon takes glycogen and glucose out of cells and use it
    - - synthesis of glucose from amino acids (not glycogen)
    - - breakdown of stored glycogen from liver
    - - sympathetic stimulation of fat breakdown