Muscular System Crossword

2. bending; the movement that decreases the angle between bones
5. the product of anaerobic metabolism, especially in muscle
9. exercise using oxygen
10. aka tetanic contraction; when the muscle is stimulated so rapidly that there is no evidence of relaxation and the contractions are completely smooth and sustained
11. chains of tiny contractile units that make up myofibrils
12. when someone exercises a muscle strenuously for a long time
13. aka myosin filaments
15. attach muscle to bone
16. the state of continuous partial contractions
18. to move toward the midline of the body
19. one of the principal contractile proteins found in muscle

1. the inward rotation of the forearm causing the radius to cross diagonally over the ulna
3. muscles acting to immobilize a joint or bone; fixes the origin of a muscle so that muscle action can be exerted at the insertion
4. aka actin filaments
6. a contractile protein of muscle
7. a motor neuron and all of the muscle cells it supplies
8. single, brief, jerky contractions
14. to move away from the midline of the body
17. attachment of a muscle that remains relatively fixed during muscular contraction
18. exercise without oxygen