bone markings

Head (articulating surface)

Prominent end of a long bone; connected to a neck (head of femur)

Condyle (articulating surface)

Rounded knob that articulates with another bone (medial condyle)

Facet (articulating surface)

Flat, shallow surface; articulates with a similar surface of another bone (superior articular facet)

Fossa (depression)

Shallow depression or basin (iliac fossa)

Sulcus/groove (depression)

Narrow groove (intertubercular sulcus)

Notch (depression)

Indentation on the edge of a bone (greater sciatic notch)

Fovea (depression)

Tiny pit or depression (fovea capitis)

Crest (projections)

Narrow ridgelike projection (iliac crest)

Epicondyle (projections)

Projection above a condyle or muscle attachments (medial epicondyle of the humerus)

Line (lines) (projections)

Slightly raised ridge (linea aspera)

Process (projections)

Prominent bone projection (mastoid process)

Protuberance (projections)

Rounded knob for muscle attachment (external occipital protuberance)

Spine (projections)

Sharp projection (anterior superior iliac)

Tubercle (projections)

Small knoblike projection (greater tubercle)

Tubercle (projections)

Small knoblike projection (greater tubercle)

Tuberosity (projections)

Rough elevation/ projection (tibial tuberosity)

Meatus (openings and spaces)

Tubular passage through a bone (internal acoustic meatus)

Fissure (openings and spaces)

Narrow slit through a bone (inferior orbital fissure)

Foramen (openings and spaces)

Hole through a bone (vertebral foramen)

Sinus (openings and spaces)

Hallow cavity in the skull bone (ethmoid sinus)