Bone type: One of the four basic bone shapes in the human skeleton — long bones, short bones, flat bones, and irregular bones.
Long bones have a tubular shaft and articular surface at each end. The major bones of the arms (humerus, radius, and ulna) and the legs (the femur, tibia, and fibula) are all long bones.
Short bones also have a tubular shaft and articular surfaces at each end but are much smaller. The short bones include all of the metacarpals and phalanges in the hands, the metatarsals and phalanges in the feet, and the clavicle (collarbone).
Flat bones are thin and have broad surfaces. The flat bones include the scapula (wingbone), the ribs, and the sternum (breastbone).
Irregular bones are irregular in size and shape and are usually quite compact. They include the bones in the vertebral column, the carpal bones in the hands, tarsal bones in the feet, and the patella (kneecap).
- Bone, blade
Bone, blade: Familiar term for the scapula, also called the shoulder blade or wing bone, the flat triangular bone at the back of the shoulder.
- Bone, breast
Bone, breast: Familiar name for what is medically termed the sternum, the long flat bone in the middle of the front of the chest. The sternum articulates (comes together) with the cartilages of the first seven ribs and with the clavicle (collar bone) to form the middle part of the anterior (front) wall of the […]
- Bone, calf
Bone, calf: Familiar name for the fibula, the lateral (outside) and smaller of the two long bones in the lower leg. The other bone in the lower leg is the tibia. The tibia bears weight; the fibula does not. The fibula articulates (comes together to form a joint) with the tibia above and with the […]
- Bone, carpal
Bone, carpal: One of the wrist bones. There are eight carpal bones that are arranged in two rows. The carpal bones articulate (come together to form a joint) proximally (on their near ends) with the long bones of the forearm — the radius and, indirectly, with the ulna — and distally (on their far ends) […]
- Bone, coccygeal
Bone, coccygeal: The small tail-like bone at the bottom of the spine very near to the anus. The coccyx is made up of 3-5 rudimentary vertebrae. It is the lowest part of the spinal column. The word “coccygeal” comes from the Greek “kokkyx” meaning “cuckoo bird.” It got this name because it was thought to […]