Bone, collar
Bone, collar: A horizontal bone above the first rib that makes up the front part of the shoulder.
The collarbone, also called the clavicle, links the sternum, or breastbone, with the scapula, a triangular bone in the back of the shoulder.
The collarbone ends at the sternum, forming one side of the sternoclavicular joint. It ends at the shoulder forming one side of the acromioclavicular joint.
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- Bone, cranial
Bone, cranial: Part of the top portion of the skull which protects the brain. The bones of the cranium include the frontal, parietal, occipital, temporal, sphenoid, and ethmoid bones.
- Bone, cuboid
Bone, cuboid: The outer bone in the instep of the foot. It is called the cuboid bone because it is shaped like a cube. The cuboid bone is jointed in back with the heel bone (calcaneus) and in front with the bones just behind the fourth and fifth toes (metatarsals).
- Bone, endochondral
Bone, endochondral: Any bone that develops in and replaces cartilage. The cartilage is partially or entirely destroyed by the process of calcification. The cartilage is then resorbed (reabsorbed), leaving bone in its place. Many bones are formed this way, particularly the long bones of the arms, legs, and ribs. “Endochondral” means “within cartilage.”
- Bone, giant cell tumor of
Bone, giant cell tumor of: A tumor of bone characterized by massive destruction of the end (epiphysis) of a long bone. The site most commonly struck by this tumor is the knee — the far end of the femur and the near end of the tibia. The tumor is often coated by new bony growth. […]
- Bone, heel
Bone, heel: A somewhat rectangular bone at the back of the foot. The words “calcaneus” and “calcium” are related. Medically termed the calcaneus. The calcaneus (from the Latin calcaneum, meaning heel or heel bone) is a bone of the tarsus of the foot which constitutes the heel. In humans, the calcaneus is the largest of […]