The Respiratory, Circulatory, and Skeletal System CrossWord

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Across
  1. 4. Three bones in either middle ear that are among the smallest bones in the human body.
  2. 6. A component of blood whose function is to react to bleeding from blood vessel injury by clumping, thereby initiating a blood clot.
  3. 8. This organ pumps blood through the blood vessels of the circulatory system.
  4. 9. The two opposing layers of serous membrane overlying the lungs and the inside of the surrounding chest walls.
  5. 10. Called a voice box.
  6. 12. A small blood vessel, from 5 to 10 micrometres in diameter, and is part of the microcirculation system.
  7. 14. Is a bone protective cavity for the brain.
  8. 15. A strong, flexible connective tissue that protects your joints and bones.
Down
  1. 1. The opening between the vocal folds.
  2. 2. The fibrous connective tissue that connects bones to other bones.
  3. 3. Is the only bone in the thigh.
  4. 5. Prevents food and water from entering the trachea and the lungs.
  5. 7. A small-diameter blood vessel in the microcirculation that extends and branches out from an artery and leads to capillaries.
  6. 11. The part of the throat behind the mouth and nasal cavity, and above the esophagus and trachea.
  7. 13. one of the two upper chambers in the heart that receives blood from the circulatory system.