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Introduction to the Skeletal System

Introduction to the Skeletal System. Major Functions. Support Protection Movement Storage (Minerals- Calcium, Phosphate) Blood cell formation ( hematopoiesis). Spongy or cancellous Inside of the bone it appears as a network of needle-like pieces Compact

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Introduction to the Skeletal System

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  1. Introduction to the Skeletal System

  2. Major Functions • Support • Protection • Movement • Storage (Minerals- Calcium, Phosphate) • Blood cell formation (hematopoiesis)

  3. Spongy or cancellous Inside of the bone it appears as a network of needle-like pieces Compact Dense outer layer that appears to be solid or smooth Long Bones- Limbs Short Bones- wrist Flat Bones- breastbone Irregular Bones- hip bones or vertebrae Bone ClassificationTissues Types

  4. Diaphysis (Long Axis of Bone) Periosteum Endosteum Medullary cavity (yellow marrow) Compact bone Epiphysis (Bone Ends) Articular cartilage Red marrow Spongy bone Epiphyseal Plate General Structure of Long Bones

  5. General Long Bone Structure

  6. Bone Markings

  7. Bone Markings • PROJECTIONS/PROCESSES • Function: 1) Attachment of muscle tendon and ligaments 2)Joint formation • Examples: • Tuberosity, trochanter • Head, condyle

  8. Bone Markings (cont.) • DEPRESSIONS AND OPENINGS • Functions: • Depressions allow for attachments • Openings are passageways for blood vessels and nerves • Examples: Foramen (Round/Oval) Fossa Meatus (Canal-like) Groove Fissure (Narrow slit-like) Sinus- (Cavity within bone that is filled with air lines with Mucous membrane)

  9. Bone Growth

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