Homeostasis
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Homeostasis
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25 Questions

1. What does it do?

2. Control shape of the lens

3. What is short sightedness?

4. What is a reflex arc?

5. Focuses the light into the retina

6. The circular muscles contract and the radial muscles relax - reducing the amount of light that enters

7. Responses that increase body temp-

8. What happens after the receptors?

9. Controls the diameter of the pupil and how much light enters

10. Outer layer - bends light into the eye

11. Thermoregulatory centre of the brain

12. What is the body's core temp?3. degrees c

13. Give some examples of stimuli?

14. Contains receptor cells- one sensitive to light intensity and the other is colour

15. What is a sensory neurone?

16. What is reaction time affected by?

17. Lens or muscles not powerful enough to bring light to focus on retina. light vocal point is behind retina (convex lens)

18. Millions of interconnected neurones

19. What is the nervous system?I. is what allows you to react to your surroundings

20. What is the cerebral cortex?

21. The tough supporting wall of the eye

22. What are the 3 main components in automatic control systems?

23. Pituitary gland in head

24. How do signals travel across a synapse?

25. The radial muscles contact and the circular muscles relax

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