General bone markings

Process

Any projection or bump on a bone.

Ramus

A bridge-like extension of a bone making an angle with the rest of the structure.

Trochanter

A large, rough projection on a bone.

Tuberosity

A medium-sized, rough projection.

Tubercle

A small rounded projection.

Crest

A prominent ridge on a bone.

Line

A low ridge on a bone.

Spine

A pointed process that is sharp and slender.

Head

The expanded articular end of an epiphysis, separated from the shaft by a neck.

Neck

A narrow connection between the epiphysis and the diaphysis.

Condyle

A smooth, rounded articular process.

Trochlea

A smooth, grooved articular process shaped like a pulley.

Facet

A small, flat articular surface.

Epicondyle

A raised area on or above a condyle.

Fossa

A shallow depression in a bone.

Sulcus

A narrow groove or furrow in a bone.

Foramen

A rounded passageway for blood vessels or nerves.

Canal or Meatus

A tunnel-like passageway through the substance of a bone.

Fissure

An elongate cleft or narrow, slit-like opening in a bone.

Sinus

A chamber within a bone, normally filled with air.