Across
- 2. a bacterial infection caused by Clostridium tetani
- 7. endocrine glands situated on the kidneys
- 10. a type of white blood cell that consumes pathogens
- 12. microscopic, single-celled organisms
- 13. the cells on which a hormone acts
- 15. the chemical store of glucose in the liver and muscles
- 18. all the endocrine glands of the body
- 19. the nerve path way operating in a reflex action
- 21. the organism a parasite lives in
- 22. the electrical message carried by a nerve cell
- 24. the space between two neurones
- 26. chemical substances that act as messengers in the body
- 27. an organic catalyst
- 28. a single cell with a tough skin that fungi use to spread
- 29. an early antibiotic
Down
- 1. anything that causes our body to stop working properly
- 3. common name for the hormone epinephrine
- 4. the lower half of the brain system
- 5. an organism that causes diseases
- 6. glands that produces hormones
- 8. the nerve that carries messages to the brain from the retina at the back of the eye
- 9. the system in our body that fights infections
- 11. the insulating layer that covers a neurone
- 14. a nerve fibre that sends nerve impulses away from the cell body
- 16. the part of the neurone that contains the nucleus
- 17. special cells that detect stimuli
- 20. organelles where cellular respiration occurs
- 23. all the chemical reactions occurring in the cells
- 25. a nerve cell