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Skeletal System

Skeletal System. 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 .

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Skeletal System

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  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: • 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 http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

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

  9. Cranium Mandible Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  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 http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  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 Clavicle Scapula Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

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

  15. Cranium Mandible Clavicle Scapula Vertebrae Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  16. Coccyx and Sacrum

  17. Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  18. Humerus (Upper Arm Bone)

  19. Cranium Mandible Clavicle Scapula Humerus Vertebrae Coccyx Sacrum Phalanges Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  20. Radius and Ulna • Radius on Top • Ulna on Bottom

  21. Cranium Mandible Clavicle Scapula Humerus Vertebrae Radius Coccyx Ulna Sacrum Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  22. Carpals or (Wrist Bones)

  23. Cranium Mandible Clavicle Scapula Humerus Vertebrae Radius Coccyx Ulna Carpels (Wristbone) Sacrum Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  24. Metacarpals (Top of Hands)

  25. Cranium Mandible Clavicle Scapula Humerus Vertebrae Radius Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  26. Phalanges (Little Fingers)

  27. Cranium Mandible Clavicle Scapula Humerus Vertebrae Radius Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  28. Rib Cage

  29. Cranium Mandible Clavicle Scapula Rib Cage Humerus Vertebrae Radius Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  30. Sternum (Breastbone)

  31. Cranium Mandible Clavicle Scapula Sternum (Breastbone) Rib Cage Humerus Vertebrae Radius Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  32. Pelvis (Dancing Bone)

  33. Cranium Mandible Clavicle Scapula Sternum (Breastbone) Rib Cage Humerus Vertebrae Radius Pelvis Pelvis Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  34. Femur (Largest Bone in the Body)

  35. Cranium Mandible Clavicle Scapula Sternum (Breastbone) Rib Cage Humerus Vertebrae Radius Pelvis Pelvis Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Femur Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  36. The Tibia and Fibula

  37. Cranium Mandible Clavicle Scapula Sternum (Breastbone) Rib Cage Humerus Vertebrae Radius Pelvis Pelvis Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Femur Patella Tibia Fibula Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  38. Tarsals

  39. Cranium Mandible Clavicle Scapula Sternum (Breastbone) Rib Cage Humerus Vertebrae Radius Pelvis Pelvis Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Femur Patella Tibia Fibula Tarsales Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  40. Metatarsals

  41. Cranium Mandible Clavicle Scapula Sternum (Breastbone) Rib Cage Humerus Vertebrae Radius Pelvis Pelvis Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Femur Patella Tibia Fibula Metatarsales Tarsales Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html

  42. Phalanges

  43. Cranium Mandible Clavicle Scapula Sternum (Breastbone) Rib Cage Humerus Vertebrae Radius Pelvis Pelvis Coccyx Ulna Carpels (Wristbone) Metacarpals Sacrum Phalanges Femur Patella Tibia Fibula Metatarsales Tarsales Picture from http://www.buzzle.com/articles/labeled-human-skeleton-diagram.html 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

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