EXP 6

• Other name for the Haverisan System

  Osteons
• What is Lamella?

  Bone Matrix
• Endosteum


  A membrane that lines the center of your bones that contain bone marrow
• Average adult has 206 bones
• What are the 2 subdivisions?

  Axial and Appendicular
• Axial Skeleton includes

  • Skull
  • Auditory Ossicles
  • Hyoid
  • Vertebral Column
  • Thoracic Cage
• Appendicular Skeleton includes

  • Upper limb
  • Lower Limb
  • Pectoral
  • Pelvic
• (Bone shape classification) Longer than they are wide; examples are upper and lower limb bones

  Long
• (Bone shape classification) Wide as they are long; examples are the bones of the wrist and ankle

  Short
• (Bone shape classification) Thin, flattened shape; examples are bones of the skull and sternum.

  Flat
• (Bone shape classification) Shapes that do not fit readily into the other three categories; examples are vertebra and facial bones

  Irregular
• How many bones in the Axial skeleton?

  22 Bones
• There are 8 Cranial Bones
• There are 14 Facial Bones
• Anterior part of cranium, the ‘forehead”

  Frontal Bone
• Sides and roof of cranium

  Parietal
• Posterior portion and floor of cranium

  Occipital
• Inferior to parietal bones on each side of the cranium, the temporomandibular joint.

  Temporal bones
• Forms part of cranium floor, lateral posterior portions of eye orbits, lateral portions of cranium anterior to temporal bones

  Sphenoid
• Anterior portion of cranium, including medial surface of eye orbit and roof of nasal cavity

  Ethmoid
• Immovable joints called sutures
• Four Principal Sutures

  • Coronal
  • Sagittal
  • Lambdoid
  • Squamous
• Freely Movable Joint

  Mandible
• 3 auditory ossicles in each middle ear
• Forms the upper jaw

  Maxillae
• Form posterior portion of hard palate

  Palatine
• Cheek Bones

  Zygomatic
• Medial surface of eye orbits

  Lacrimal
• Bridge of nose

  Nasal
• Forms nasal septum with the ethmoid bon


  Vomer
• Attached to lateral walls of nasal cavity

  Inferior Nasal Conchae
• Lower jawbone

  Mandible
• Only movable skull bone

  Mandible
• 4 Paranasal Sinuses

  • Frontal
  • Ethmoid
  • Sphenoid
  • Maxillary
• Unpaired U-shaped bone

  Hyoid
• It is the only bone in the body that does not articulate with another bone.

  Hyoid
• Central axis of the skeleton

  Vertebral Column
• Ther vertebral column has 26 individual bones, grouped into 5 regions
• Five Regions of the Vertebral Column

  • Cervical
  • Thoracic
  • Lumbar
  • Sacral
  • Coccygeal
• Four Major Curvaqtures

  • Cervical
  • Thoracic
  • Lumbar
  • Sacrococcygeal