Excretory/Respiratory

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. Any of the smallest ___ ducts (plural) (11)
  2. 4. Either of two bean-shaped excretory organs that filter wastes from the blood and excrete them (6)
  3. 5. Liquid excretory product (5)
  4. 6. Either of two saclike respiratory organs in the chest of vertebrates (plural) (5)
  5. 8. A cartilaginous structure at the top of the trachea (6)
  6. 11. An abnormal condition of the lungs marked by decreased respiratory function (9)
  7. 12. A small intertwined group of capillaries in the malpighian body (10)
  8. 13. One of the tubules forming the respiratory system of most insects and many arachnids (7)
  9. 14. Respiratory disorder characterized by wheezing (6)

Down

  1. 2. Any of the minute blood vessels connecting arterioles with venules (plural) (11)
  2. 3. A flap of cartilage that covers the windpipe while swallowing (10)
  3. 7. Gas in the air that we need to breathe (6)
  4. 9. Any of the small tubules that are the excretory units of the vertebrate kidney (7)
  5. 10. Either of the two main branches of the trachea (8)