Across
- 2. Fast-acting control system, responds to internal and external changes, activates muscles and glands.
- 5. Transports materials (oxygen, carbon dioxide, nutrients, wastes) via blood.
- 6. Protects deeper tissues, regulates body temperature, location of cutaneous nerve receptors.
- 8. Breaks down food, allows for nutrient absorption into blood, eliminates indigestible material.
- 9. Produces movement, maintains posture, produces heat.
Down
- 1. Keeps blood supplied with oxygen, removes carbon dioxide.
- 3. Secretes regulatory hormones for growth, reproduction, and metabolism.
- 4. Supports and protects body organs, provides muscle attachment for movement, site of blood cell formation, stores minerals.
- 7. Eliminates nitrogenous wastes, maintains acid-base balance, regulates water and electrolytes.