MA+Skeletal+System

Skeletal System (1) A bone is an organ composed of what types of tissues? (Be detailed, pictures nice) The bones of the skeleton are composed of bone tissues and cartilage. (2) Describe the make up of LONG bone. DESCRIBE In a long bone hyaline cartilage covers the ends of a long bone. Periosteum covers the rest of the bone. Spongy bone is in the epiphyses. Yellow bone marrow is in the medullary cavity of the diaphysis. Compact bone makes up the wall of the diaphysis. (3) What types of cells are involved in bone growth, remodeling, and repair? DESCRIBE Osteoblasts, which are bone-forming cells, osteocytes, which are mature bone cells derived from osteoblasts, and osteoclasts, whichk break down and absorb bone. (4) What are two types of ossification. DESCRIBE. Intramembranous ossifiaction: Bones develop between sheets of fibrous connective tissue. Examples are flat bones such as bones of the skull. Endochondral ossification: cartilaginous models of the bones are replaced by calcified bone matrix. (5) What are the four steps required in fracture repair? DESCRIBE. (6) What are the functions of the skeleton? The skeleton supports the body. The skeleton protects soft body parts. The skeleton produces blood cells. The skeleton stores minerals and fat. The skeleton, along with the muscles, permits flexible body movement. (7) How are joints classified? Fibrous joints are immovable. Cartilaginous joints are slightly movable. Synovial joints are freely movable. (8) Give examples of different types of synovial joints and the movements they permit. The ball-and-socket joints at the hips and shoulders allow movement in all planes, even rotational movement. The elbow and kneww joints are synovial joints called hinge joints, because like a hinged door, they largely permit movement in one direction only.
 * 1) hermatoma formation
 * 2) fibrocartilaginous callus
 * 3) bony callus
 * 4) remodeling