Across
- 2. food such as grass or hay for horses
- 4. condition caused by an increased loss of water from the body
- 5. blood vessels which carry oxygenated blood away from the heart to the rest of the body
- 6. two main branches of the trachea
- 10. pair of organs in the rib cage which are responsible for inhaling oxygen and releasing carbon dioxide
- 12. located at the base of the brain and controls growth and development
- 13. blood vessels which carry blood towards the heart
- 14. located behind the thyroid gland and regulates calcium
Down
- 1. windpipe which allows air to and from the lungs
- 3. main structural protein found in hair, wool, horns and feathers
- 5. located above each kidney and helps control the heart rate and blood pressure
- 7. male organ which produces sperm
- 8. gland in the neck which secretes hormones regulating growth and development and the rate of metabolism
- 9. female reproductive organ in which eggs are produced
- 11. something which causes an internal or external body response
- 12. large gland behind the stomach which releases digestive enzymes