the clavicle is at the level of directly above the first rib with reference to the ribs.
the clavicle is at the level of directly above the first rib with reference to the ribs.
at what level is the clavicle with reference to the ribs?
directly above the first rib
the clavicle is the bone that connects the trunk of the body to the arm, and it is located directly above the first rib. a clavicle is located on each side of the front, upper part of the chest. the clavicle consists of a medial end, a shaft, and a lateral end. the medial end connects with the manubrium of the sternum and gives attachments to the fibrous capsule of the sternoclavicular joint, articular disc, and interclavicular ligament. the lateral end connects at the acromion of the scapula which is referred to as the acromioclavicular joint. the clavicle forms a slight s-shaped curve where it curves from the sternal end laterally and anteriorly for near half its length, then forming a posterior curve to the acromion of the scapula.
clavicle fracture
seeley noted in 1892 that the clavicle was fused to the coracoid by a suture in elasmosaurians, and was apparently "an inseparable part" of the scapula. meanwhile, all plesiosaurs with two-headed neck ribs (the plesiosauridae and pliosauridae) had a clavicle made only of cartilage, such that ossification of the clavicle would turn a "plesiosaurian" into an "elasmosaurian". williston doubted seeley's usage of neck ribs to subdivide plesiosaurs in 1907, opining that double-headed neck ribs were instead a "primitive character confined to the early forms". charles andrews elaborated on differences between elasmosaurids and pliosaurids in 1910 and 1913. he characterized elasmosaurids by their long necks and small heads, as well as by their rigid and well-developed scapulae (but atrophied or absent clavicles and interclavicles) for forelimb-driven locomotion. meanwhile, pliosaurids had short necks but large heads, and used hindlimb-driven locomotion.
elasmosauridae