Digestion

bone consist :skull,clavicle,upper arm


Bone,numerus,rib,colomn,ulna,radius,pelvia,fermur,patella,fibula,leg,scapula,tail bone,carpals,meta carpals,phalanges।



muscles:ther are about 650 muscles concerned with moving parts of the body.
the smallest bones,which are in the ear.
the largest muscles in the butocks which move the legs.
muscles,like bones,need regular use to keep them healthty.without exercise,they become flabby and waste away.

the various parts of the musculo-skeletal system are joined to together।muscles are joined to bones and bones are joined to other bones.three main .types of connective tissue-tendons,ligam ents and cartilage-help the part of the system to wor to gether.
tendonts are tough,stringy"ropes,:which join muscles to bones.many muscles taper to strong,rope-like tendonts at each end.the tendont must pass on the pull on the bone without.