Z331 Fall 2010 Ecampus Week 2 Lecture 3 Axial Appendicular Posted

Z331 Fall 2010 Ecampus Week 2 Lecture 3 Axial Appendicular Posted

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Week 2: Lecture 3:  Chapter 7 –   The Skeletal  System: The Axial  Skeleton, also Chapter 8  – The Skeletal System:  The Appendicular  Skeleton
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The Axial  Skeleton forms the longitudinal  axis of the body has 80 bones
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Bones of the Axial  Skeleton The skull The vertebral column: 24 vertebrae the sacrum  the coccyx The thoracic cage: 24 ribs  the sternum
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Functions of the Axial  Skeleton Supports and protects organs in  body cavities Attaches to muscles of: head, neck, and trunk respiration appendicular skeleton Figure 11-10, 344
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The Vertebral Column The spine or vertebral column: protects the spinal cord supports the head and body Figure 13-3, 425 Figure 7-1, 207
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The Vertebral Column 26 bones:  24 vertebrae, the sacrum, and coccyx Regions: Cervical (Neck) - 7 Thoracic (Upper back) – 12 Each articulates with pair of ribs Lumbar (Lower back) - 5 Sacral (Base of spine) – 5 fused Coccygeal (“tailbone”) – 3 to 5 fused Figure 7–16, 224
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Vertebral Regions Vertebrae are numbered:
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