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Sternum   Listen
noun
Sternum  n.  (pl. L. sterna, E. sternums)  
1.
(Anat.) A plate of cartilage, or a series of bony or cartilaginous plates or segments, in the median line of the pectoral skeleton of most vertebrates above fishes; the breastbone. Note: The sternum is connected with the ribs or the pectorial girdle, or with both. In man it is a flat bone, broad anteriorly, narrowed behind, and connected with the clavicles and the cartilages of the seven anterior pairs of ribs. In most birds it has a high median keel for the attachment of the muscles of the wings.
2.
(Zool.) The ventral part of any one of the somites of an arthropod.





Collaborative International Dictionary of English 0.48


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"Sternum" Quotes from Famous Books



... compare the limb-bones of fowls, ducks, pigeons, and rabbits, with the same bones in the wild parent-species. As the measurements and weights were fully given in the earlier chapters, I need here only recapitulate the results. With domestic pigeons, the length of the sternum, the prominence of its crest, the length of the scapulae and furcula, the length of the wings as measured from tip to tip of the radius, are all reduced relatively to the same parts in the wild pigeon. The wing and tail feathers, however, are increased ...
— The Variation of Animals and Plants Under Domestication, Volume II (of 2) • Charles Darwin
... high, and were most of them situated at the lower Part of the Sternum, or a little to one Side of it, commonly on the left Side, above the cartilago ensiformis. Some Patients had only one, others two, and some three such Tumours. The first of them I saw was on the left Side, which, on being felt, gave exactly the same Sensation ...
— An Account of the Diseases which were most frequent in the British military hospitals in Germany • Donald Monro
... irregular anastomosing lines on the shields; beneath reddish-yellow. The marginal plates longer than broad, the second larger than the first and third; and rather angularly produced in the middle of the inner edge, opposite the suture between the first dorsal and first costal plate; the sternum high, flat, strongly and sharply keeled on ...
— Journals Of Two Expeditions Of Discovery In North-West And Western Australia, Vol. 2 (of 2) • George Grey
... backward, the union of the posterior ribs with their cartilages, excepting, however, the two last. The attachment is peculiarly strong. It is denticulated: it encloses the whole of the latter and inferior part of the chest as far as the sternum, where it is connected with ...
— The Dog - A nineteenth-century dog-lovers' manual, - a combination of the essential and the esoteric. • William Youatt


Words linked to "Sternum" :   sternal, os, axial skeleton, breastbone, bone, pectus, gladiolus


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