1/3/2024 0 Comments Flat bones function![]() Examples of irregular bones are the vertebrae, hip bones, and several skull bones. These bones may have short, flat, notched, or ridged surfaces. Irregular bones are bones with complex shapes. Examples of flat bones are the sternum (breast bone), ribs, scapulae (shoulder blades), and the roof of the skull (Figure 1). For example, the bones of the wrist (carpals) and ankle (tarsals) are short bones (Figure 1).įlat bones are thin and relatively broad bones that are found where extensive protection of organs is required or where broad surfaces of muscle attachment are required. Short bones, or cuboidal bones, are bones that are the same width and length, giving them a cube-like shape. Exceptions to this include the patella and the bones of the wrist and ankle. Most of the limb bones are long bones-for example, the femur, tibia, ulna, and radius. The rounded ends, the epiphyses, are covered with articular cartilage and are filled with red bone marrow, which produces blood cells (Figure 2). The diaphysis, or central shaft, contains bone marrow in a marrow cavity. ![]() Long bones are longer than they are wide and have a shaft and two ends. ![]() (The growth plate is the part of the bone that grows during childhood.) Thus, the most affected bones are the thigh bone (femur), the shin in the region of the knee joint as well as the upper arm bone next to the shoulder joint.Figure 2. The long bone is covered by articular cartilage at either end and contains bone marrow (shown in yellow in this illustration) in the marrow cavity. ![]() Good to know: in about 50 % of osteosarcoma patients, the tumour develops in the growth plates (metaphyses) of fast-growing long bones.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |