The Skeletal System Essay -- essays research papers

Chapter 7I.Bone StructureA.Bone Classification1.4 Classes Long, Short, flat and irregular2. employment of a long prink- forearm and thigh get up.3.Short castanets are shaped like cubes4.Ex. Of short rises are in wrists and ankle bones5. instantly bones are platelike structures6.Ex of Flat bones are platelike structures7.Irregular bones vary in size8.Irregular bones vary in size9.Examples of irregular bones are those of the vertebra and some facial bones10.Round bones are also called sesamoid bones i.They are small and modular and embedded in tendonsii.Example is the patella (kneecap)B.Parts of a long bone1. An expanded end of a long bone is an epiphysis2.An epiphysis articulates with another bone3.articulary Cartilage is located on the epiphysis 4.The shaft of a long bone is called a diaphysis5.Periosteum functions t multifariousness and repair bone weave6.Periosteum is a tough, vascular, fibrous membrane covering the diaphysis of a bone7.Processes provide sites for attachme nt of tendons or ligaments8.The wall of the diaphysis is composed of compact bone9.Compact bone has no gaps10.Ephiphysis is composed of spongy bone11.Spongy bone consists of bony plates called trabeculae12.A bone is composed of spongy and compact bone13.A canal called the medullary cavity runs through the diaphysis14.The endosteum lines this cavity and spaces of the spongy bone15.Endosteum contains bone forming cells16.The tissue that fills the spaces of the bone is called marrow17.&nb... ...ome osteocytes11.Periosteum comes from cells of the primitive conncective tissue that persist outside of the create bone.12.Compact bone is formed by osteoblasts on the inside of periosteum13.Intramembranous ossification is the process if replacing connective tissue to form an intramembranous bone.D.Endochondral Bones1.Most of the bones are these types of bone2.They develop as masses of hyaline cartilage3.Eventually the cartilage decompses forming periosteum from connective tissue that encirc les that developing structure4.Blood vessels and undifferentiated connective tissue cells invade the disintegrating tissue5.Some of these cells become osteoblasts6.Ostoeblasts form the spongy bone in the spaces previously housed by cartilage7.Endochondral ossification is the process of forming an endochondral bone by the replacement of hyaline cartilage.