Control

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 4. Relating to electric power or electric charges. (10)
  2. 5. Substance used in or made by chemistry (8)
  3. 6. The secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has (plural) (8)
  4. 8. An automatic instinctive unlearned reaction to a stimulus (6)
  5. 10. Instrumentality that combines interrelated interacting artifacts designed to work as a coherent (6)

Down

  1. 1. Machine that converts other forms of energy into mechanical energy and so imparts motion (5)
  2. 2. Electrical conduction through a gas in an applied electric field (3)
  3. 3. Any of various organs that synthesize substances needed by the body and release it through ducts (plural) (6)
  4. 4. An organ that becomes active in response to nerve impulses (8)
  5. 7. Causing or fraught with or showing anxiety (7)
  6. 9. The portion of the vertebrate nervous system consisting of the brain and spinal cord (3)