Across
- 4. Motor neuron and the muscle fibers it controls
- 5. Breakdown of glucose without oxygen
- 6. Tiny blood vessels for nutrient exchange
- 8. Muscle growth from resistance training
- 9. Slow energy system using oxygen
- 13. Cell structure where aerobic ATP is made
- 14. Ability to sustain prolonged activity
Down
- 1. Stress hormone that increases during exercise
- 2. Type of muscle found only in the heart
- 3. Fastest energy system using creatine phosphate
- 4. Oxygen-storing molecule in muscles
- 7. Fight-or-flight hormone
- 10. Maximal oxygen uptake measurement
- 11. Byproduct of anaerobic metabolism
- 12. Exercise relying on oxygen for fuel