2. Read Contractual Obligations Muscle System  List several ways the muscular system assist you in your everyday life.  How many muscle does a human have?  Identify 3 types of muscle and where can they be found?  Where can you find your busiest muscles?  Explain how a muscle works.  Assess your body and explain why your muscles play a vital role in helping you to maintain homeostasis?

3. Skeletal System An organ system of humans that is found internally (endoskeleton) that is made up of individual bones and fused bones

4. Skeletal System Functions Movement of the entire body or body parts from one place to another 1. Locomotion

5. 2. Provides protection for internal organs Organs such as the heart, lungs and brain

6. 3. Provides our body with shape (form and structure) and support

7. 4. Site (place) for red blood cell production

8. 5. Stores minerals Such as calcium and phosphorus

9. Bone Facts As adults we have 206 bones We are born with more than 300 Bones are rigid organs that form part of the endoskeleton of some organisms

10. Skeletal System An organ system of humans that is found internally (endoskeleton) that is made up of individual bones and fused bones

11. 1. Compact bone hardest part that gives bone strength that contains cells, calcium & phosphorus Parts of bone

12. 2. Marrow flexible tissue found in the hollow interior of bones that produces red blood cells

14. 3. Periosteum is the tough outer membrane

15. 4. Spongy bone found at the ends of long bones for added strength

18. 5. Canals passageways that bring food & oxygen to bone cells, contains nerves

22. Cartilage Is flexible bone Is a form of connective tissue Is a slippery material 3x more slippery than ice Makes for easy movement of bones

23. Skeleton of newborn made mostly of cartilage

24. Found at ends of bones For protection /Shock absorber

25. Found in between vertebrae (cushioning)

26. Creates shape of certain body parts

27. Joint Any place in the skeletal system that two or more bones meet

28. A. Immovable joint called a fixed joint because no movement occurs there TYPES: Found in the skull/cranium

31. B. Pivot joint when there is a rotation of one bone around another Found in the neck

32. C. Ball-and-socket joint Found in the shoulder and the hip When one bone fits into another creating a circular motion

34. D. Hinge joint when the two bones creates a back and forth direction only

36. E. Gliding joints when bones slide along each other Found in wrist and ankle and vertebrae

37. PartsParts of the Human Skeleton

38. 1.Cranium Skull Protects the brain

40. Your face has 14 bones

41. 2. Clavicle collar bone 3. Rib cage

43. 4. Sternum breast bone

44. 5. Vertebrae backbones Humans have 33 Humans and giraffes have the same number of bones in their necks. Giraffe neck vertebrae are just much, much longer!

47. 6. Humerus upper arm bone 7. Ulna & radius lower arm

51. 8. Pelvis hip bone

53. 9. Femur thigh bone longest & strongest

54. 10. Patella knee cap Babies are born without the patella (knee bone) it develops between ages 2 and 5.

56. 11. Carpals wrist bones 12. Metacarpals hand bones

57. 13. Phalanges fingers & toes One fourth of your bones are located in your feet

63. The only bone not broken so far during any ski accident is one located in your inner ear.

64. If you break your wrist as an adult it will take you 8 weeks to heal. A five year old child who breaks their wrist only takes 3 weeks to heal.

65. Bone marrow 2 types: 1. Yellow marrow made of fat cells

66. 2. Red marrow produces blood cells

67. People are born with only red bone marrow. As a person matures, the red marrow in many of the bones is replaced by yellow marrow. By adulthood, only about half of the bone marrow is red. Red bone marrow is found mostly in the ribs, breastbone, shoulder blades, collar bones, hip bones, skull, and spine.

69. Parts of the Skeletal system 1. Bones 2. Ligaments 3. Tendons 4. Cartilage

70. LigamentsConnective tissue that connects bone to bone

71. Tendons Connective tissue that connects muscle to bone

75. Arthritis Swelling of the joints Causes pain, stiffness

76. Scoliosis