presternum

/pree-stur-nuhm/US // priˈstɜr nəm //

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Definitions

n.名词 noun

1
plural pre·ster·na [pree-stur-nuh], /priˈstɜr nə/, pre·ster·nums.
- : Anatomy. manubrium.

The sternum of the Balæna consists of a broad, flattened, heart-shaped or oval presternum.
The presternum is as a rule small and compressed, often much keeled, especially in the horse and tapir.
In the ant-eaters and armadillos the presternum is broad and sometimes as in Priodon strongly keeled.
In all bats the presternum has a prominent keel for the attachment of the great pectoral muscles.
The two clavicles are joined across the top of the presternum by an interclavicular ligament.