Bone Markings

Category #1

sites of muscles & ligaments attachment

Category #2

projections that help formation of joints/articulations (come tghr)

Category #3

depressions (allow passage of blood vessels & nerves)

Tuberosity

cat #1 / large, rounded projection / tibial tuberosity

Crest

cat #1 / narrow ridge of bone, usually prominent / iliac crest (hip)

Trochanter

cat #1 / v large, blunt irregular shape / greater & lesser (not pal) trochanter of femur

Line

cat #1 / narrow ridge, less prom than crest / intertrochanteric line (in btwn)

Epicondyle

cat #1 / raised area on/above a condyle, site of lig attach / medial & lateral epicondyle of humerus

Tubercle

cat #1 / small rounded project or process / greater & lesser tubercle of humerus

Spine

cat #1 / sharp, slender often pointed project / scapular spine

Ramus

cat #1 / “off-short”: arm-like bar / mandibular ramus

Head

cat #2 / bony expansion carried on narrow neck / femoral head

Facet

cat #2 / smooth nearly flat articular surface / rib facets (connects to vert)

Condyle

cat #2 / rounded articular project / femoral condyle

Meatus

cat #3 / canal-like passage way / external auditory meatus

Sinus

cat #3 / cavity w/in bone filled w/air & lined w/mucous mem / sinus in cranium

Fossa

cat #3 / shallow basin-like depression often articular surface / glenoid fossa in scapula

Groove

cat #3 / slit-like furrow / bicipital groove in humerus

Fissure

cat #3 / narrow slit-like opening / fissure in skull

Foramen

cat #3 / round or oval opening through bone / vertebral foramen