Human Systems

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