Across
- 4. stored in the liver and the muscles. provides the body with a source of energy if blood glucose levels decrease.
- 5. when a part of a plant grows towards or away fro gravity
- 6. allows light to enter the inside of the eye
- 8. A nerve fibre connecting the eyes to the brain
- 9. when a part of a plant grows towards or away from the direction which light is coming.
- 10. hormone created in the pancreas that controls the amount of glucose in the bloodstream.
- 13. carries nerve impulses away from the cell body
Down
- 1. extensions of a nerve cell that
- 2. detects light and depth of the refracted light
- 3. chemical substance, produced by a gland and carried in the bloodstream, which alters the activity of specific target organs.
- 7. know as the "master gland"
- 11. cell that carry information messages or signals to and from the brain and the rest of the body
- 12. when the muscles around the blood vessels become more tight to make the space inside smaller.