sternum

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sternum:

see ribrib,
one of the slender, elongated, curved bones that compose the chest cage in higher vertebrates. Ribs occur in pairs, and are found in most vertebrates; however, in some lower vertebrates, including fishes, they run along the entire length of the backbone.
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Sternum

 

the complex of skeletal elements in terrestrial vertebrates and man that unite, along the midline of the body, the ventral ends of the true ribs and parts of the pectoral girdle and to which the sternal muscles are attached.

The sternum is a derivative of the ribs and first appeared in terrestrial vertebrates when a strengthening of support for the pectoral girdle was required in connection with the progressive evolution of the forelimbs. In amphibians and reptiles the sternum is usually cartilaginous; in the latter, only a few ribs are attached, forming the thorax. In birds the sternum is osseous; in flying birds there is a median process, the keel, to which the powerful pectoral muscles are attached. In mammals the sternum consists of three sections: the manubrium, the corpus sterni, and the xiphoid process. In man the sternum, or breastbone, is an unpaired flat bone that forms the middle part of the anterior wall of the thorax.

sternum

[′stər·nəm]
(anatomy)
The bone, cartilage, or series of bony or cartilaginous segments in the median line of the anteroventral part of the body of vertebrates above fishes, connecting with the ribs or pectoral girdle.

sternum

1. (in man) a long flat vertical bone, situated in front of the thorax, to which are attached the collarbone and the first seven pairs of ribs
2. the corresponding part in many other vertebrates
3. a cuticular plate covering the ventral surface of a body segment of an arthropod
References in periodicals archive ?
This Phase Ib/II study is a prospective, multi-centre, two-part trial evaluating the safety and efficacy of D-PLEX in 80 patients in Israel for the prevention of sternal infection post-cardiac surgery.
In the case of congenital symmastia without macromastia, liposuction over the sternal area is the treatment of choice.
Deep sedation was defined as the stage in which the bird showed depression of consciousness, satisfactory muscle relaxation, and sternal recumbency.
All dorsal setae are smooth and J5 needle like usually fine pilose; sternal shield with sculptured 2
Alternative to sternal resections, extensive curettage and PMMA have been used, even though it is less invasive procedure with low infection rates.
Ozaki et al, (7) in the 1990's, reported that reconstruction of the sternal region using acrylic resin and polypropylene mesh was feasible.
A follow-up MRI of the chest done 2 weeks later on POD#47 showed nonspecific thickening and enhancement of sternal soft tissue, but no fluid collection or abscess.
In this position, PM disrupts in a predictable sequence, being the most inferior segments of the sternal head the first to fail, due to the relative shorter length and greater lateral attachment angle, which generates bigger tensions.
The masses of the secondary cartilage in the acromial and sternal ends were established histologically as a true physis, where longitudinal growth occurred.
Two heifers were unable to rise, lied in sternal recumbent position.
Setae Z1 anterior in position with setae R1; peritreme reaching between setae z4 and z2; genital shield wider than sternal shield; ventrianal shield ovate; calyx tubular .
These grafts are also associated with loss of sternal blood flow2 and increased incidence of sternal wound infection, importantly in diabetics.