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BONE MARKINGS

BONE MARKINGS. External surfaces of bones have: - bumps, grooves, and holes They serve as sites of muscle, ligament, tendon attachment, joint surfaces, or conduits for nerve fibers and blood vessels. Every bump, groove, and hole has a name on your bones. Bone Markings.

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BONE MARKINGS

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  1. BONE MARKINGS External surfaces of bones have: - bumps, grooves, and holes They serve as sites of muscle, ligament, tendon attachment, joint surfaces, or conduits for nerve fibers and blood vessels. Every bump, groove, and hole has a name on your bones

  2. Bone Markings • Two types of bone markings: • Projections (aka processes) that grow out from the bone • Depressions (cavities) that indent the bone

  3. Joint Projections • 1) Condyle: Rounded articular projection Condyle

  4. Joint Projections • 2) Head: bony expansion on a narrow neck • 3) Facet: smooth, nearly flat articular surface neck

  5. Joint Projections • 4) Ramus: Armlike bar of bone

  6. Ligament/Tendon Projections 1) Crest: Narrow ridge of bone (Line: smaller than a crest) 2) Epicondyle: Raised area on or above a condyle ULNA

  7. 3) Tubercle: Small rounded projection 4) Tuberosity: large rounded or roughened projection 5) Trochanter: very large, blunt projection (only on femur) Proximal Tibia

  8. Ligament/Tendon Projections 6) Spine: Sharp, pointed projection 7) Process: ANY bony prominence Spinous process Thoracic Vertebrae

  9. Depressions • Allow blood vessels or nerves to pass through. 1) Meatus: (me - A- tus) Canal or tube

  10. Depressions 2) Fossa: shallow basin, often serving as an articular surface 3) Fissure: narrow, slit-like opening

  11. Depressions 4) Sinus: Cavity within a bone; filled with air and lined with mucous membranes 5) Foramen: Round or oval opening Foramen Magnum

  12. Depressions 6) Sulcus, Groove or Furrow: a shallow depression

  13. Projections Condyle Head Facet Ramus Crest Epicondyle Tubercle Tuberosity Trochanter Spine Process Depressions Meatus Fossa Fissure Sinus Sulcus or Groove or Furrow Review:

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