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HORMONES (How is the production controlled? (hormone production is…

- - - - Hypothalamus : regulates the secretion of some pituitary hormones
      - Pituitary Gland : secretes a number of hormones that controls secretion of hormones (several other endocrine glands) ;
        often referred to as the ‘master gland’ ; secretes antidiuretic hormone (ADH)
      - Adrenal Gland (medulla) : secretes adrenaline
      - Ovary (females) : secretes oestrogen & progesterone
      - Testis (males) : secretes testosterone
      - Pancreas : Islets of Langerhans in the pancreas secrete insulin & glucagon
- - - - islets of Langerhans are unable to produce/secrete sufficient insulin
    - - target cells, such as the muscle cells, do not respond well to insulin
  - - - People with type 1 diabetes : a supply of sugary food such as glucose sweets
      - People with type 2 diabetes : regulating the carbohydrate content in their diet & by exercising (lifestyle changes)
- - - - Hormones are transported by blood
      - Impulses are transmitted by neurones
    - - endocrine control: usually slow responses & short-lived / long-lived
      - nervous control: usually quick responses & short-lived
    - - endocrine control: affect more than 1 target organ
      - nervous control: usually localised