Topic 4 - Regulation of Systems

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Across
  1. 3. clusters of cells located within the Islets of Langerhans in the pancreas responsible for producing glucagon
  2. 5. a counteractive response to a stimulus that reduces the size of the original disturbance, eventually leading back to the set point (optimum)
  3. 8. an excess of glucose in the bloodstream; often associated with Type 1 diabetes
  4. 9. the dilation of blood vessels which increases blood flow and reduces blood pressure
  5. 10. the maintenance of a relatively stable internal environment within small tolerance limits, despite changes in the external environment
  6. 12. (stimulus-response model) a counteractive response to a disturbance that brings about a change back to the set point
  7. 14. a condition where excess amounts of thyroxine is secreted by the thyroid gland
  8. 16. the regulation of core body temperature through the actions of nervous and endocrine systems
  9. 18. (stimulus-response model) a change (disturbance) in the internal environment above or below the set point
  10. 19. the constriction of blood vessels which decreases blood flow and increases blood pressure
  11. 21. receptors inside an organism that detect changes in temperature
  12. 22. (stimulus-response model) a sensory nerve ending that detects changes in the internal environment (e.g. thermoreceptors, chemoreceptors & osmoreceptors)
  13. 23. clusters of cells located within the Islets of Langerhans in the pancreas responsible for producing insulin
Down
  1. 1. a complex carbohydrate made up of glucose molecules; stored in large quantities in liver, muscle and body cells
  2. 2. the internal fluid environment within an organism; consists of cellular cytosol, extracellular fluid and blood plasma
  3. 4. (stimulus-response model) a cell, tissue or organ that brings about a response to a stimulus
  4. 6. a condition in which your immune system mistakenly attacks your body; fails to recognise 'self' from 'non-self'
  5. 7. thermoreceptors found in the hypothalamus that detect very small temperature changes
  6. 8. a deficiency of glucose in the bloodstream
  7. 11. a condition where the body makes an autoantibody which mimics the role of TSH, stimulating the thyroid to make more thyroxine than required
  8. 13. a hormone released by the pituitary gland that acts on cells of the kidney, resulting in water reabsorption back into the blood
  9. 15. an autoimmune disease where the beta cells in the pancreas are destroyed by the body's own immune cells
  10. 17. thermoreceptors found under the skin that detect large temperature changes
  11. 20. (stimulus-response model) the brain, coordinating organ or tissue that sends a message to an effector