Surface Markings Terms The Skeletal System The surfaces of bones have various structural features adapted to specific functions. These features are called surface markings. Long bones that bear a great deal of weight have large, rounded ends that can form sturdy joints, for example. Other bones have depressions that receive the rounded ends. Foramen Meatus Fossa Condyle Head Facet Depressions and Openings an opening through which blood vessels, Example: Hole at the base of the Skull nerves, or ligaments pass a tubelike passageway running within a Example: Within the ear bone a depression in or on a bone Example: Temporal Fossa Processes that form Joints a large, rounded articular prominence Example: Superior end of Tibia a rounded articular projection supported Example: Head of the Humerus on the constricted portion (neck) of a bone a smooth, flat surface Example: In between vertebrae Processes to which tendons, ligaments and other connective tissues attach a large, rounded, usually roughened Example: Ischium (part of the Hip) process Tuberosity Spinous process Trochanter Crest a sharp, slender projection Example: Tail on the Vertebrae a large, blunt projection found only on the femur Example: Head of the Femur a prominent border or ridge Example: Hip Bone (iliac Crest)