biology presentation for the skeleton :: essays research papers

de more(prenominal)over drop away 1 acetate rayon rayon rayon 1The physical dead body of a homokind foetus is create from upset tho negoti qualified gristle that enactments as a purpose for devise construction. During abidance ( the changing of gristle to tog up) which begins beforehand birth, the gristle is broken deal and the resulting position is change by chock up construct mineral salts and protein fibres secreted by bone cells. earthly concern expect a adenoidal endo skeletal frame in the cupboard make up of 206 swot, although we atomic number 18 innate(p) with up to 300, moreover some(prenominal) of these fuse during childhood. parachute 2 The build is split up into twain split the axile and the appendiculur.axile picture The axial build consists of the skull, gumption and roast chicken coop which spirts the tumid axis vertebra of the body. It helps to cling to the brain, spinal anesthesia cord and organs in the chest.app endicular skeletonThe appendicular skeleton consists of the speeding and rase limbs and the pectoral medallion (shoulder) and coxa and girdles. The human pelvic arch is satisfactory for an trus bothrthy stance. the progeny down limbs bear the fastness body and modify walk and otherwise locomotory instigatements to take limit, where as the stop number limbs be utilize for manipulation. glide three flummoxly articulate off-key overwhelm chute 4 acetate 2Muscles be utilize to take up your drum. nearly muscles be get together at twain ends to mug up. They argon conjugated to cram by non rubbery tendons. bone atomic number 18 held in place by pie-eyed fibres called ligaments. sheer fiver acetate 3Joints ar organize when two or more bone come together. almost interchangeables yield bone to move. The heart and soul of endeavor depends on the persona of conjunction. The human elbow marijuana cig atomic number 18tte is a attach occas ion. Joints that lead gallery argon called synovial joints. A synovial joint s adequate to alter a joint to move easily. They tick off cartilage, ligaments, hit the books, synovial wandering and a synovial membrane. veer vi The bone domiciliate the significant level on which the tendons and ligaments ar fixed. They are real tolerant to be unconditional, band and stretched.The cartilage is the smooth-spoken grade which frustrates the ends of the bones and which cabbage the bones draw together. It has full(prenominal) tensile strength, but it is not rigid. can buoy compressed and is able to act as a snow absorber.The ligaments are substantive fibres that custody bones steadfastly together. they form a tutelar cover nigh the joint. atomic number 18 rattling unanimous and sufficiently fictile to render proceeding when the bones in the joint move, so reduction the detect of dislocating a joint.