Examples of irregular bones are those of the vertebra and some facial bones 10. Round bones are also called sesamoid bones i. They are small and modular and embedded in tendons ii. Example is the patella (kneecap) B. Parts of a long bone 1.
A hollow medullary cavity is found in the center of the long bones and serves as a storage are for the bone marrow. Examples: Femur and Tibia, Etc. Short bones are about the same size long and wide. The carpal bone of the wrist and the tarsal bones of the bones of the foot are the short bones in the body. The flat bones in the body vary in size and shape but have a common feature of being very thin in one direction.
The cranium has two temporal bones located to the base and side of the skull, and two parietal bones that make up the top of the skull. Clavicle The collarbone is a big doubly curved long bone that joins the arm to the trunk of the body.Based directly above the first rib it keeps the scapula in place so that the arm can hang freely. Ribs The ribs are flat, thin bones that, together with the sternum, create up of the ribcage. The ribs provide safety for vital organs in the upper body, along with the heart and lungs. The ribs also help to protect major vessels in the upper body.
This cell is known as a chondrocyte. It is a cell found in healthy cartilage which is a part of the skeletal system. The skeletal system is mainly made up of bones. These bones support the body. Without them, the skeleton would have no structure, just a gooey mass of tissues.
Bone shapes The shapes of the bones reflect their functions. Long bones act as leavers to raise and lower; short bones, such as the ankle bones (talus) are useful bridges; flat bones including those found in the skull form protective shells. Small, rounded, sesamoid bones, such as the knee cap (patella), are embedded within tendons. Irregular bones include vertebrae, the pelvis (ilium), and some skull bones, such as the sphenoid. Bones of the hand and foot The skeletal structure of the hand and foot is similar; in both cases there is an interlinking arrangement of small bones.
In the femur, cancellous bone mainly distributes in upper extremity and lower extremity while cortical bone consist mainly the middle shaft bone. Femur bone is light and strong which is hardly bro- ken in static state. However in many high speed impact situations femur is likely broken. The FEA(finite element analysis) method helps apply different kinds of load and force on to the femur model and reveal detail information of it. !
Each bone has 6 surfaces- Palmar, dorsal, lateral, medial, proximal, distal. There are four bony pillars at the four corners of carpal bones. All attachments are to these four pillars ie scaphoid, pisiform, trapezium and hamate. A) SCAPHOID The scaphoid bone is boat shaped and it has a tubercle on
The small bone located anterior to the knee joint is referred to as the patella. In the leg is found two long bones, these are known as the tibia and fibula. The bones of the foot include the tarsal bones which form the ankle joint, the metatarsals and the phalanges. The most important of the tarsal bones are the talus bone which forms a joint with the tibia and fibula and the calcaneus which forms an attachment to the muscles of the calf via the calcaneus tendons also referred to as Achilles tendons
They consist of; compact bone and spongy bone. First, compact bone depicts the main shaft of long bones in the human body such as the arms and legs. Its tissue is dense and hard and it also makes up the outer layer of most bones in our body. Meanwhile, spongy bone tissue is made up of smaller plates occupied with red bone marrow. Mostly, it is found at the ends of long bones such as the head of the femur.
An osteoblast is a “baby” bone cell whose main job is to secrete osteoid which forms the hardened, or calcified, bone matrix. Osteocytes are formed from osteoblasts. Osteocytes are the mature bones cells that have been completely differentiated. They are found in the lacunae of hard bone and have a spider-like appearance due to their canaliculi. Osteoclasts are a different type of cell formed from the mesenchymal cells.