bone markings every bump, groove, and hole has a name on your bones external surfaces of bones have:...
Post on 17-Dec-2015
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BONE MARKINGSEvery bump, groove, and hole has
a name on your bonesExternal 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.
Bone Markings
• Two types of bone markings:– Projections (aka processes) that grow out
from the bone
– Depressions (cavities) that indent the bone
Joint Projections
• 2) Head: bony expansion on a narrow neck
• 3) Facet: smooth, nearly flat articular surface
neck
Ligament/Tendon Projections
1) Crest: Narrow ridge of bone (Line: smaller than a crest)
2) Epicondyle: Raised area on or above a condyle
ULNA
3) Tubercle: Small rounded projection
4) Tuberosity: large rounded or roughened projection
5) Trochanter: very large, blunt projection
(only on femur)
Proximal Tibia
6) Spine: Sharp, pointed projection
7) Process: ANY bony prominence
Thoracic Vertebrae
Ligament/Tendon Projections
Spinous process
Depressions
2) Fossa: shallow basin, often serving as an articular surface
3) Fissure: narrow, slit-like opening
Depressions
4) Sinus: Cavity within a bone; filled with air and lined with mucous membranes
5) Foramen: Round or oval opening
Foramen Magnum
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