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Disorders of the Axial Skeleton

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by

Kelly Reid

on 18 February 2015

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Transcript of Disorders of the Axial Skeleton

Forms the long axis of the body
Supports the head, neck, and trunk
Protects brain, spinal cord, and organs in the thorax
80 named bones arranged into 3 major regions
Skull
Vertebral column
thoracic cage
Axial Skeleton
Disorders of the Axial Skeleton
Body's most complex bony structure
Skull/Cranium
Spinal column or spine consists of 26 bones connected into a flexible, curved structure/main support of the body axis
Vertebral Column
Bony frame work of the chest/roughly barrel-shaped and includes the thoracic vertebrae
Thoracic Cage
Cleft Palate- congenital abnormality that distort the skull. Most common is where the left and right halvesof palate fail to join medially. Defect leaves an opening between the mouth and nose
Disorders
Stenosis of Lumbar Spine
-
narrowing of vertebral canal in lumbar region. The disorder can compress the roots of the spinal nerves and cause back pain. Narrowing can cause degeneration or arthritic changes in vertebral joints
Disorders cont.
Disorders cont.
8 Cranial bones
Frontal (1)
Parietal (2)
Occipital (1)
Temporal (2)
Sphenoid (1)
Ethmoid (1)
14 Facial bones
Nasal (2)
Lacrimal (2)
Zygomatic (2)
Inferior nasal concha (2)
Mandible (1)
Maxilla (1)
Palatine(2)
Vomer(1)
4 Sutures
Coronal
Squamous
Sagittal
Lambdoid
Cervical Vertebrae (7 vertebrae of the neck, C1-C7)
Thoracic Vertebrae (12 vertebrae T1-T12)
Lumbar Vertebrae (5 vertebrae that support the lower back, L1-L5)
Sacrum (articulates with hip bones of the pelvis)
Coccyx (most inferior part of spine)
Sternum (breast bone)
Ribs (12 pairs)
Abnormal spinal curvatures
Scoliosis- "twisted disease" abnormal lateral curvature of more then 10 degrees. Occurs most often in thoracic region
Kyphosis- "humped disease" An exaggerated thoracic curvature that is most common in older woman. Often a result of spinal fractures from osteoporosis
Lordosis- "bent-backward disease" An accented lumbar curvature. Temporary lordosis can occur in people carrying a "large load in front" such as obease men or pregnant woman.
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