Skeletal System Key Terms

Front

Breastbone

Back

Sternum: The flat bone located in the center of the chest, connecting the ribs.

Front

Collarbones

Back

Clavicles: The two bones that connect the arms to the body, located above the first rib.

Front

A storage area for fat cells; also contains cells that form leukocytes (white blood cells)

Back

Yellow marrow: A type of bone marrow that stores fat and produces some blood cells.

Front

Forms the extremities and is composed of the shoulder girdle, arm bones, pelvic girdle, and leg bones

Back

Appendicular skeleton: The part of the skeleton that includes the limbs and girdles.

Front

Ankle bones

Back

Tarsals: The seven bones that make up the ankle.

Front

The central part of the skeleton, including the skull, vertebrae, and ribs

Back

Axial skeleton: The part of the skeleton that supports the head, neck, and trunk.

Front

The bone that forms the upper arm

Back

Humerus: The long bone in the upper arm that runs from the shoulder to the elbow.

Front

The bone that forms the thigh

Back

Femur: The longest bone in the body, located in the upper leg.

Front

The knee cap

Back

Patella: A small bone that protects the knee joint.

Front

The bones of the forearm

Back

Radius and Ulna: The two long bones in the forearm.