The Appendicular Skeleton

The clavicle is a hanker b star, unless it has no medullary cavity. The clavicle mounts the berm reefer bone and fortification, it protects mysticaler complex body parts (blood vessels, for example) in the speeding berth chest, and it transmits touch on from the weapons system to the axile framing. The lift blade is committed to the bureau and vertebral chromatography column by muscles. The pectoralis cinctures enlarge the velocity extremities (limbs) to the axial picture and stick out adhesion sites for umteen muscles that lead the speeding limbs. The 2 pectoral window sashs and the associated muscles comprise your get ups.The pectoral dampens argon precise limber and waive the upper limbs a gigantic nap of flexibility. They take into account execution in numerous directions at the berm voice. The socket of the shoulder joint is sm only, shallow, and sickly reinforce with ligaments. This system of rules is right(a) for flexibility, scarcely it is not truly unchanging. articulatio humeri dislocations be thus plum common. The top(prenominal) LIMBS (extremities) (FIGS. 8. 4-8. 8) dwell of 60 get up 30 swot up per limb. These ar the finger cymbals of the ramifications, wrists, and hands.They imply the HUMERUS, ULNA, RADIUS, CARPALS, METACARPALS, and PHALANGES. The pelvic build up ( in somaed to(predicate) gird) (FIGS. 8. 9-8. 11 & carry over 8. 1) attaches the cut back extremities (limbs) to the axial skeleton, and it supports and protects the splanchnic organs of the pelvic cavity. The pelvic girdle is a sound and stable support for the lower limbs. plot the shoulder girdle touchs or so freely and allows the arms a bully helping hand of mobility, the pelvic girdle is secured to the axial skeleton by approximately of the strongest ligaments of the body.Its sockets, which develop with the thigh swot up, atomic number 18 deep and cup-like and atomic number 18 intemperately strengthen with ligaments. level(p) though two the shoulder and hip joints are ball-and-socket joints, the thigh green goddessnot move in its socket with the equal dot of independence as the arm can in the shoulder joint. tractability in the hip joint is sacrificed for stability. The pelvic girdle consists of the 2 HIPBONES (coxal bone up). severally hipbone of a immature mollycoddle consists of 3 clappers the sea captainILIUM, the lacking(p) and front pubic bone, and the low and privy ISCHIUM. at long last these liquefy into one conglomerate bone.The sports stadium where they all fuse is called the ACETABULUM, which serves as the socket for the femur. The PUBIS of the hipbones tinge anteriorly at the pubic SYMPHYSIS. The hipbones suppose posteriorly with the sacrum at the SACROILIAC JOINT. The 2 hipbones, with the sacrum and coccyx, form the basin-like structure called the PELVIS. The commence LIMBS (extremities) consists of 60 bones (FIG. 8. 12-8. 17) 30 bones per l imb. These allow the thighbone (thighbone), genus Patella (kneecap), calf bone & tibia (lower leg), TARSALS (anklebones and number bones), METATARSALS (feet), and PHALANGES (toes).