1. Skeletal System

2. 4 Functions of the Skeletal System
1. Supports the body. The backbone is the main support center for the upper body. It holds your head up and protects your spinal cord. 2. Protects internal organs: The bones of your skull protect your brain. Your ribs protect your lungs and heart from injury
Muscle attached to bones!!

3. 4 Functions of the Skeletal System
3. Works with Muscles to produce movement: Skeletal system provides points of attachment for muscles. Your legs and arms move when the muscles pull on the bones. 4. Makes Blood: Red and white blood cells are formed by tissue called marrow, which is in the center of the bone.

4. Bone Structure Typical Four Layers: Periosteum: Compact Bone:
Covers Bones
Compact Bone:
Lies beneath the periosteum
Spongy Bone:
Lies beneath the compact bone
Bone Marrow:
Fills the gaps between the spongy bone
Spongy Bone
Compact Bone
Bone Marrow /Marrow Cavity

5. Bones of the Cranium
Some are thicker
than others!!!

6. Cranium Bones Parietal Bone Parietal Bone Frontal Bone Temporal Bone
Occipital Bone

7. Cranium
Picture from

8. Mandible
The mandible is the largest and strongest bone of the face. ?
What else is it called?
Maxilla

9. Cranium
Mandible
Picture from

10. Clavicle or Collarbone
The clavicle, or collar bone, holds the shoulder joint away from the rest of the upper body and is only as thick as your little finger.

11. Cranium Mandible Clavicle
Picture from

12. Scapula
The scapula is located on the back side of the ribcage and helps provide part of the shoulder joint and movement for the arms.

13. Cranium Mandible Scapula Clavicle
Picture from

14. Vertebral column
Also known as the spine, or vertebrae.  
A column usually consisting of 24 articulating vertebrae

15. Cranium Mandible Scapula Clavicle Vertebrae
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16. Coccyx and Sacrum

17. Cranium Mandible Scapula Clavicle Vertebrae Coccyx Sacrum
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18. Humerus (Upper Arm Bone)

19. Cranium Mandible Scapula Clavicle Vertebrae Humerus Coccyx Sacrum
Phalanges
Picture from

20. Radius and Ulna
Radius on Top
Ulna on Bottom

21. Cranium Mandible Scapula Clavicle Vertebrae Humerus Radius Coccyx Ulna
Sacrum
Picture from

22. Carpals or (Wrist Bones)

23. Cranium Mandible Scapula Clavicle Vertebrae Humerus Radius Coccyx Ulna
Carpels (Wristbone)
Sacrum
Picture from

24. Metacarpals (Top of Hands)

25. Cranium Mandible Scapula Clavicle Vertebrae Humerus Radius Coccyx Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Picture from

26. Phalanges (Little Fingers)

27. Cranium Mandible Scapula Clavicle Vertebrae Humerus Radius Coccyx Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Picture from

28. Rib Cage

29. Cranium Mandible Scapula Clavicle Vertebrae Rib Cage Humerus Radius
Coccyx
Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Picture from

30. Sternum (Breastbone)

31. Cranium Mandible Scapula Clavicle Vertebrae Sternum (Breastbone)
Humerus
Rib Cage
Vertebrae
Radius
Coccyx
Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Picture from

32. Pelvis (Dancing Bone)

33. Cranium Mandible Scapula Clavicle Vertebrae Sternum (Breastbone)
Humerus
Rib Cage
Vertebrae
Radius
Pelvis
Pelvis
Coccyx
Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Picture from

34. Femur (Largest Bone in the Body)

35. Cranium Mandible Scapula Clavicle Vertebrae Sternum (Breastbone)
Humerus
Rib Cage
Vertebrae
Radius
Pelvis
Pelvis
Coccyx
Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Femur
Picture from

36. The Tibia and Fibula

37. Cranium Mandible Scapula Clavicle Vertebrae Sternum (Breastbone)
Humerus
Rib Cage
Vertebrae
Radius
Pelvis
Pelvis
Coccyx
Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Femur
Patella
Tibia
Fibula
Picture from

38. Tarsals

39. Cranium Mandible Scapula Clavicle Vertebrae Sternum (Breastbone)
Humerus
Rib Cage
Vertebrae
Radius
Pelvis
Pelvis
Coccyx
Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Femur
Patella
Tibia
Fibula
Tarsales
Picture from

40. Metatarsals

41. Cranium Mandible Scapula Clavicle Vertebrae Sternum (Breastbone)
Humerus
Rib Cage
Vertebrae
Radius
Pelvis
Pelvis
Coccyx
Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Femur
Patella
Tibia
Fibula
Metatarsales
Tarsales
Picture from

42. Phalanges

43. Cranium Mandible Scapula Clavicle Vertebrae Sternum (Breastbone)
Humerus
Rib Cage
Vertebrae
Radius
Pelvis
Pelvis
Coccyx
Ulna
Carpels (Wristbone)
Metacarpals
Sacrum
Phalanges
Femur
Patella
Tibia
Fibula
Metatarsales
Tarsales
Picture from
Phalanges

44. The Connectors of the Body
Ligaments: Connect bone to bone

45. The Connectors of the Body!!
Tendon: Attaches muscles to bones

46. The Connectors of the Body
Cartilage: It acts as a cushion between bones at a joint and protects the bones.

47. Joints of the Body
Ball and Socket Joint: Round end of bone fitting snuggly within another bone.
Ex. Shoulder and Hip

48. Joints of the Body
Hinge Joint: Movement at joint in one direction like a door.
Ex. Knee and Elbow

49. Joints of the Body
Pivot Joint: one bone rotates in the ring of another bone.
Ex. Neck, Wrist and Ankles

50. Joints of the Body Gliding Joint: Bones glide over another bone.
Ex. Knuckles

51. Problems of the Skeletal System
Fracture: Break
Dislocation: Out of joint

52. Problems of the Skeletal System
Sprain: Swelling in the joint
Arthritis: Inflamed and stiff joints

53. Problems of the Skeletal System!!
Scoliosis: Curvature of the spine
Osteoporosis: Brittle bones