Foramen
Round or oval opening through a bone
Fissure
Narrow, slitlike opening.
Groove
Furrow
Fossa
Shallow, basinlike depression in a bone, often serving as an articular surface
Meatus
Canal-like passageway
Sinus
Space within a bone, filled with air and lined with mucous membrane
Ramus
Arm-like bar of bone
Condyle
Rounded articular projection
Facet
Smooth, nearly flat articular surface
Head
Bony expansion carried on a narrow neck
Process
Prominence or projection
Spine
Sharp, slender, often pointed projection
Epicondyle
Raised area on or above a condyle
Tubercle
Small rounded projection or process
Line
Narrow ridge of bone; Less prominent than a crest
Trochanter
Very large, blunt, irregularly shaped process.
Crest
Narrow ridge of bone; usually prominent
Tuberosity
Large rounded projection; May be roughened.