Body Systems and Fitness

123456789101112131415
Across
  1. 3. Energy production using oxygen inside cellular mitochondria.
  2. 5. Cellular process of extracting energy from food.
  3. 6. Swapping fresh inhaled oxygen for waste carbon dioxide in blood.
  4. 8. Body control center consisting of the brain and spinal cord.
  5. 9. Respiration Oxygen-free energy release that produces lactic acid in muscles.
  6. 10. System of heart and blood vessels pumping blood around the body.
  7. 12. Body's capacity to transport and utilise oxygen during long exercise.
  8. 14. Microscopic blood vessels supplying oxygen directly into muscle fibers.
  9. 15. Heart Rate Number of heartbeats per minute measured when fully relaxed.
Down
  1. 1. Microscopic air sacs in the lungs where gas swap occurs.
  2. 2. Structured, repeatable physical workouts designed to build fitness.
  3. 4. Blood that has released its oxygen to working body tissues.
  4. 7. Combined body system of the heart and respiratory system delivering oxygen to muscles.
  5. 11. Automatic, protective muscle response handled by the spinal cord.
  6. 13. Volume Volume of blood pumped out with a single beat of the heart.