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Bone Markings and Joint Projections

Explore the different types of bone markings, from projections for muscle attachment to depressions allowing passage of blood vessels and nerves. Learn about joint projections like condyle, head, facet, and more. Identify depressions like meatus, fossa, fissure, sinus, foramen, and sulcus. Study bone anatomy with clear explanations and illustrations.

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Bone Markings and Joint Projections

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  1. BONE MARKINGS Every bump, groove, and hole has a name on your bones

  2. Bone Markings • Two types of bone markings: • Projections (processes) grow out from the bone • Sites for muscle attachment • Help to form joints

  3. Bone Markings • Two types of bone markings: • Depressions/Openings(cavities) that indent the bone • Allows blood vessels and nerves to pass

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

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

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

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

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

  9. 6) Spine: Sharp, pointed projection Thoracic Vertebrae

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

  11. Depressions 2) Fossa: shallow basin 3) Fissure: narrow, slit-like opening

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

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

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

  15. Bone Origins Activity

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