biology

HideShow resource information
View mindmap
  • Biology revison
    • Homeostasis
      • Its a controlling internal conditions.
      • Needs to be removed.
        • urea
        • Carbon dioxide
      • Needs controlling
        • Temperature
          • body temperature is controlled by the thermo
            • regulatory centre in the brain.
              • Kept at 37`c
                • Best temperature for enzymes
        • Ion content
        • Water content
          • The lungs
            • When we exhale
          • The skin
            • When we sweating
          • The body
            • In urine produced by the kidneys
        • Blood glucose
          • Provide cells with constant supply of glucose for respiration
            • The lungs
              • When we exhale
    • Reflexes
      • Actions are automatic and rapid
      • Receptor detects a stimulus
        • change in the environment
      • sensory neurone
        • sends signal to relay neurone
      • motor neurone
        • sends signal to effector
      • Effector
        • produces a response
    • The endocrine system
      • Hormes
        • Composed of glands that secrete chemicals
          • Called hormones directly into the blood stream.
        • where are they in the body?
          • Head downwards
      • The pituitary glands
        • The master gland
          • several hormones into the blood in response to body conditions
        • Controls growth in children
      • Pancreas
        • Controls the levels of glucose in the blood
        • Produces insulin and glucogon
          • glucagon intracts with insuiln
      • Thyroid gland
        • Controls the metabolic rate of the body
    • Diabetes
      • Type 1
        • Where the blood glucose may rise to a high levels
        • The pancreas doesn't secrete enough insulin
        • How its treated
          • Injection
            • Replace the hormones that is not often made in the body
        • Who it effects
          • Under 40s
      • Type 2
        • The body stops responding to its own insulin
        • How its treated
          • Carbohydrate
          • controlled diet
          • more exercise
        • Who it effects
          • Older people

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Homeostasis resources »