Digestive System (2)

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 2. A cartilaginous structure at the top of the trachea (6)
  2. 5. The longest part of the alimentary canal (14)
  3. 6. The passage between the pharynx and the stomach (9)
  4. 7. The region of the body of a vertebrate between the thorax and the pelvis (7)
  5. 8. Any of several complex proteins that are produced by cells and act as catalysts in specific (plural) (7)

Down

  1. 1. One of the tubules forming the respiratory system of most insects and many arachnids (7)
  2. 3. Either of two saclike respiratory organs in the chest of vertebrates (plural) (5)
  3. 4. A mechanical device in a camera that controls size of aperture of the lens (9)