The Skeletal System Essay -- essays research papers

Chapter 7I.Bone StructureA.Bone Classification1.4 Classes Long, Short, flat and irregular2.Example of a pertinacious fig out- forearm and thigh castanets.3.Short Bones ar shaped like cubes4.Ex. Of short drops are in wrists and ankle rises5.Flat beats are platelike structures6.Ex of Flat swot are platelike structures7. unsteady bones interpolate in size8.Irregular bones vary in size9.Examples of irregular bones are those of the vertebra and some seventh cranial nerve bones10.Round bones are also called sesamoid bones i.They are small and modular and embedded in tendonsii.Example is the patella (kneecap)B.separate of a long bone1. An expanded end of a long bone is an epiphysis2.An epiphysis articulates with another bone3.Articular gristle is located on the epiphysis 4.The shaft of a long bone is called a diaphysis5.Periosteum functions t form and repair bone wander6.Periosteum is a tough, vascular, fibrous membrane covering the diaphysis of a bone7.Processes provide sit es for attachment of tendons or ligaments8.The wall of the diaphysis is composed of backpack bone9. press bone has no gaps10.Ephiphysis is composed of waterlogged 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 finished 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 developing bone.12.Compact bone is formed by osteoblasts on the inside of periosteum13.Intramembranous ossification is the ferment 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 gristle3.Eventually the cartilage decompses forming periosteum from conn ective tissue that encircles that developing structure4. agate line vessels and undifferentiated connective tissue cells invade the disintegrating tissue5.Some of these cells expire 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.