• Support- framework that supports body  and cradles its soft organs• Protection- for delicate organs, heart,  lungs, brai...
• Long Bones- legs and arms• Short Bones- hands and feet• Flat Bones- rib, pelvis, scapula, skull,  sternum• Irregular Bon...
spongy boneProximal                                 compact boneepiphysis                                             Endo...
The Vertebral Column  Cervical Vertebrae           (7)  Thoracic Vertebrae          (12)  Lumbar Vertberae           (5)  ...
The Thoracic Cage           Sternum           True Ribs (7)           False Ribs (3)           Floating Ribs (2)
Bones of the Pectoral Girdle
HumerusUlnaRadius8 Carpals5 Metacarpals14 Phalanges
Pelvis (lateral view)                   Ilium                Acetabulum                  Obturator                  forame...
Male Pelvic Girdle   Female Pelvic Girdle
The Lower Limb                       (Legs)         Femur        Patella           Tibia          Fibula   7 Tarsals5 Meta...
phalanges metatarsalstarsals          tarsals                metatarsals                       phalanges
Immovable Joints  (synarthrosis) suturepubis symphisis
Slightly Movable Joint   (ampharthrosis)
(diarthrosis)- freely moveable                   pelvis                 ligaments               femur
jointcapsule             pelvis hyalinecartilage            synovial                     cavity            femur
Synovial Joint MovementExtension                                 Rotation                   Flexion                       ...
275 bones12 weeks (6-9 inches       long)
Fetus: 1st      Endochondral Ossification        2 months                                                                 ...
hematoma           callus   bony callus                                  bone                                  remodeling
Diseases of the Skeletal System:Osteoporosis- bone reabsorption  outpaces bone deposit; bones  become lighter and fracture...
Spinal Curvatures
Diseases of the Skeletal System:Rickets- vitamin D deficiencyOsteomalacia- soft bones, inadequatemineralization in bones, ...
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
Skeletal system
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Skeletal system

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Skeletal system

  1. 1. • Support- framework that supports body and cradles its soft organs• Protection- for delicate organs, heart, lungs, brain• Movement- bones act as levers for muscles• Mineral storage- calcium & phosphate• Blood cell formation- hematopoiesis
  2. 2. • Long Bones- legs and arms• Short Bones- hands and feet• Flat Bones- rib, pelvis, scapula, skull, sternum• Irregular Bones- vertebrae, some facial bones, carpals, tarsals• Sesamoid- patella
  3. 3. spongy boneProximal compact boneepiphysis Endosteumdiaphysis epiphyseal line yellow marrow Sharpey’s fibersDistalepiphysis periosteum hyaline cartilage
  4. 4. The Vertebral Column Cervical Vertebrae (7) Thoracic Vertebrae (12) Lumbar Vertberae (5) Sacrum Coccyx
  5. 5. The Thoracic Cage Sternum True Ribs (7) False Ribs (3) Floating Ribs (2)
  6. 6. Bones of the Pectoral Girdle
  7. 7. HumerusUlnaRadius8 Carpals5 Metacarpals14 Phalanges
  8. 8. Pelvis (lateral view) Ilium Acetabulum Obturator foramenIschium Pubis Ischium
  9. 9. Male Pelvic Girdle Female Pelvic Girdle
  10. 10. The Lower Limb (Legs) Femur Patella Tibia Fibula 7 Tarsals5 Metatarsals14 Phalanges
  11. 11. phalanges metatarsalstarsals tarsals metatarsals phalanges
  12. 12. Immovable Joints (synarthrosis) suturepubis symphisis
  13. 13. Slightly Movable Joint (ampharthrosis)
  14. 14. (diarthrosis)- freely moveable pelvis ligaments femur
  15. 15. jointcapsule pelvis hyalinecartilage synovial cavity femur
  16. 16. Synovial Joint MovementExtension Rotation Flexion Adduction Abduction
  17. 17. 275 bones12 weeks (6-9 inches long)
  18. 18. Fetus: 1st Endochondral Ossification 2 months 2o ossification center bonecartilage calcified Just before cartilage birth epiphyseal epiphyseal line plate Childhood Adult
  19. 19. hematoma callus bony callus bone remodeling
  20. 20. Diseases of the Skeletal System:Osteoporosis- bone reabsorption outpaces bone deposit; bones become lighter and fracture easierFactors:• age, gender (more in women)• estrogen and testosterone decrease• insufficient exercise (or too much)• diet poor in Ca++ and protein• abnormal vitamin D receptors• smoking
  21. 21. Spinal Curvatures
  22. 22. Diseases of the Skeletal System:Rickets- vitamin D deficiencyOsteomalacia- soft bones, inadequatemineralization in bones, lack of vitamin DPagets Disease- spotty weakening in thebones, excessive and abnormal boneremodelingRheumatoid arthritis- autoimmunereaction

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