3. THE SKELETAL AND MUSCULAR SYSTEMS

4. SKELETAL SYSTEM THE AVERAGE PERSON HAS 206 BONES

5. BONES ARE HELD TOGETHER BY LIGAMENTS LIGAMENT

6. TENDONS ARE CONNECTIVE TISSUES THAT ATTACH BONE TO MUSCLE ACHILLES TENDON

7. FUNCTIONS GIVES SHAPE AND SUPPORT ALLOWS MOVEMENT PROTECTS TISSUES AND ORGANS STORES CERTAIN SUBSTANCES PRODUCE BLOOD CELLS

8. DEVELOPMENT OF BONES CARTILAGE CONNECTIVE TISSUE THAT FORMS BONES STRONG ENOUGH TO SUPPORT WEIGHT BUT FLEXIBLE

9. BONE REPLACES CARTILAGE ABOUT SEVEN MONTHS BEFORE BIRTH CARTILAGE REMAINS IN JOINTS, EARS, AND NOSE –ACTS AS A CUSHION –PROVIDES SLIPPERY SURFACE FOR BONE MOVEMENT

12. STRUCTURE OF BONES BONE IS ONE OF TOUGHEST AND LIGHTEST MATERIALS IN THE BODY 206 BONES MAKE UP ABOUT 14% OF BODY MASS BONES ARE ALIVE – NERVES, BONE- FORMING CELLS, AND BLOOD VESSELS

14. BONES ARE LIKE ROCKS – HARD AND STRONG –MINERALS MAKE BONES HARD AND STRONG CALCIUM AND PHOSPHORUS

15. THE BONE HOLLOW SHAFT –YELLOW MARROW – FAT AND BLOOD VESSELS –RED MARROW – PRODUCES BLOOD CELLS

16. SURROUNDING THE SHAFT – MEMBRANE CONTAINS BONE- FORMING CELLS AND BLOOD VESSELS

17. MUSCLES ATTACH TO BONE SURFACE RUNNING THROUGH THE BONE SYSTEM IS A SYSTEM THAT BRINGS FOOD AND OXYGEN IT ALSO CONTAINS NERVES

18. SKELETAL JOINTS JOINT – WHERE BONES COME CLOSE TOGETHER MOVEABLE JOINTS – ALLOW BONES TO MOVE

19. BALL AND SOCKET ALLOWS FOR CIRCULAR MOTION

20. HINGE JOINT ALLOWS FORWARD AND BACKWARD MOVEMENT

21. PIVOT JOINT ALLOWS BONES TO MOVE OVER EACH OTHER

22. THE MUSCULAR SYSTEM

23. THE ONLY TISSUE THAT CONTRACTS OR SHORTENS MORE THAN 600 MUSCLES WORK WHILE YOU SLEEP TO KEEP YOU ALIVE

24. MUSCLES ARE MADE OF FIBERS THAT RUN PARRALLEL TO ONE ANOTHER AND ARE HELD TOGETHER BY BUNDLES OF CONNECTIVE TISSUE

26. SKELETAL MUSCLES ALLOWS MOVEMENT ASSOCIATED WITH BONES STRIATED OR BANDED VOLUNTARY – YOU CAN CONTROL

27. SMOOTH MUSCLE CONTROL BREATHING, BLOOD PRESSURE, ETC. DO NOT HAVE BANDS INVOLUNTARY YOU DO NOT CONTROL

28. CARDIAC MUSCLE HEART WEAVE A COMPLEX MESH INVOLUNTARY

29. ACTIONS MUSCLES WORK IN PAIRS NERVE TISSUE IS INVOLVED MUSCLE CONTRACTS COMPLETELY OR NOT AT ALL

30. INJURIES TO SKELETAL AND MUSCULAR SYSTEM

31. SPRAIN LIGAMENT IS TORN OR PULLED BEYOND NORMAL RANGE

32. FRACTURE BREAK IN BONE

33. –HEALING BEGINS IMMEDIATELY –BROKEN BLOOD VESSELS FORM CLOT –MINERALS FROM SHARP ENDS ABSORBED –CONNECTIVE TISSUE GROWS TO HOLD BONE ENDS TOGETHER

34. DISLOCATION A BONE IS FORCED OUT OF IT’S JOINT –THIS NEEDS A DOCTOR TO PUT IT BACK