Across
- 2. protects internal organs from injury
- 4. muscle is nonstriated and involuntary
- 7. are released on demand
- 8. abbreviation of central nervous system
- 9. provides the essential nutrients and oxygen while removing many of the metabolic wastes
- 10. the largest organ of the body
- 12. prevents the friction between bones
- 14. immovable joints
- 15. tissue storing and moving substances within the body
- 16. major influence of the gradual inability to repair or recover from the external effect
- 17. sensations includes those for touch, pressure, vibration, etc.
- 18. neuron responsible for transmitting the nerve impulse
Down
- 1. system that releases chemical messengers in the form of hormones into the bloodstream
- 3. classified by their structural or functional characteristics
- 5. inherited inability to produce melanin
- 6. fast involuntary sequences of actions that occur in response to particular stimuli
- 11. detect changes in the nervous system
- 13. upward movement of the body part
- 14. gland responsible for regulating body temperature