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The Skeletal System: The Axial Skeleton Handout #4 Skeletal System-KNOW BONES

The Skeletal System: The Axial Skeleton Handout #4 Skeletal System-KNOW BONES. A. Divisions of the skeletal system B. Skull 1. Sutures 2. Fontanels C. Hyoid bone D. Vertebral column 1. Divisions 2. Normal curves E. Thorax

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The Skeletal System: The Axial Skeleton Handout #4 Skeletal System-KNOW BONES

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  1. The Skeletal System: The Axial SkeletonHandout #4 Skeletal System-KNOW BONES • A. Divisions of the skeletal system • B. Skull 1. Sutures 2. Fontanels • C. Hyoid bone • D. Vertebral column 1. Divisions 2. Normal curves • E. Thorax 1. Sternum 2. Ribs

  2. Adult Human Skeleton • 1. axial • 2. appendicular

  3. Human Skull

  4. Skull Bones • 1. cranial (8) • 2. facial (14)

  5. Sutures • 1. coronal (1) • 2. sagittal (1) • 3. lambdoidal (2) • 4. squamosal (2) _______________ • 5. Wormian bones

  6. Fontanels • 1. anterior (frontal) (1) • 2. posterior (occipital (1) • 3. anterolateral (sphenoidal) (2) • 4. posterolateral (mastoidal) (2) Why are fontanels important? Childbirth and Brain Growth

  7. Hyoid Bone • Why is this bone important? anchor point for muscles of the: 1. tongue above 2. larynx below

  8. Vertebral Column • 1. series of 26 vertebrae • 2. functions • 3. intervertebral formina • 4. distribution a. 7 cervical b. 12 thoracic c. 5 lumbar d. 1 sacrum e. 1 coccygeal

  9. Varieties of Vertebrae

  10. Intervertebral discs • 1. location • 2. annulus fibrosus • 3. nucleus pulposus • 4. functions

  11. Vertebral Curves • 1. primary a. thoracic b. sacral 2. secondary a. cervical b. lumbar

  12. Thoracic Cage • 1. components a. sternum b. costal cartilages c. vertebral bodies T1 - 12 • 2. functions • Why is this important? protection of viscera, yet flexible enough to allow respirations

  13. Ribs • 1. attachments a. vertebral b. sternal • 2. distribution a. true ribs (1-7) b. false ribs (8-12) c. floating ribs (11-12)

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