A connective tissue sheath known as perichondrium overlies the fre surface of most cartilage. Perichondrium is vascular and its vessles suppl nutients to the cells of the cartilage. Bone- connective tissue consists of cells and exracellular matrix. Consisis of cells nd and extracellular matrix. Special feature of bone is the mineralization of tis matrix with calcium phosphate in the from of hydroxyapatite crystals which produce an extremely hard tissue capable o providing support and protection.
Virtually all synchondroses are synarthrotic. In symphyses the articular surface surface of the bone are covered with articular hyaline cartilage , which in turn is fused to an intervening pad, or plate of fibrocartilage, which is the main connecting material. Fibrocartilage acts as a shock absorber and permits a limited amount of movement at the joint. 3a Articulating bone: Articulating" means that the bones are moving relative to each other at a joint. The actual surfaces of the bones that might touch the other are the articulating surfaces, and the cartilage covering those surfaces is called articular cartilage.
3. Capitulum- just lateral to the trochlea, articulates with the head of the radius to form the humeroradial joint 4. Medial epicondyle- the prominate projection of bone on the medial side of the distal humerus. This easily palpable prominence serves as the proximal attachment for most of the wrist flexor muscles, the pronator teres, and the collateral ligament of the elbow 5. Lateral epicondyle- less prominent, proximal attachment for most wrist extensor muscles, the supinator muscle, and lateral collateral ligament of the elbow.
A joint is the location at which two or more bones make contact. They are constructed to allow movement and provide mechanical support and weight bearing. 2. What is a synovial joint? Synovial joints are made up of bones that come together to formulate the joint, the ligaments attach bone to bone and allow for the joint movement to be stable and in the correct direction.
In compact bones, blood vessels pass through the bones periosteum, the membrane surrounding the bone, and the endosteum through perpendicular channels known as the perforating canals. These canals are conjoined with the central canal, also known as the Haversian canal, which runs the length of the bone, and houses the blood vessels and nerve cells. Surrounding the central canal are layers of bone that are often remnants of previous Haversian systems, called lamellae. Inside the layers of the lamellae are small chambers containing osteocytes, or bones cells. These chambers are known as lacunae.
It keeps the shape of some structures in place. Elastic cartilage is found in part of the external ear and as the lid on top of the larynx. 2. Endochondral ossification is when bone replaces cartilage in the body. Epiphyseal growth plates cause long bones grow longer.
The movement of the bones is caused by muscles which pull on tendons that are attached to bone. Cartilage is a hard, smooth tissue that covers the end of bones. Between the cartilages of two bones which form a joint, there is a small amount of thick fluid called synovial fluid. This fluid lubricates the joint which allows smooth movement between the bones. The synovial fluid is made by the synovium.
Capsular ligaments are a part of the articular capsule that surrounds synovial joints. They act up as mechanical reinforcements, creating stability when the ligaments join together. Articular cartilage- Articular cartilage is a white smooth tissue that covers the ends of bones in the joints. It enables bones of a joint to easily glide over one another, establishing easy movement. Joints between the bones, knee, elbow, and rib cage are some areas in the body where these cartilages can be found.