shoulder girdle

shoulder girdle
pectoral girdle (the bony support of the pectoral fin behind the gills and usually attached to the posterior part of the skull; the "shoulder" girdle. Composed of the following basic elements (some of which may be lost): coracoid, scapula, pterygials, postcleithrum, cleithrum (main bone), supracleithrum and posttemporal. The "primary" pectoral girdle includes actinosts, scapula, coracoid, and sometimes mesocoracoid cartilage or endochondral bones and supports the fins directly. The "secondary" (and more primitive) pectoral girdle encloses the dermal post-temporal, supracleithrum, cleithrum, and two postcleithra, which are membrane bones and is only indirectly related to the fins)

Dictionary of ichthyology. 2009.

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  • Shoulder girdle — Shoulder Shoul der, n. [OE. shulder, shuldre, schutder, AS. sculdor; akin to D. schoulder, G. schulter, OHG. scultarra, Dan. skulder, Sw. skuldra.] 1. (Anat.) The joint, or the region of the joint, by which the fore limb is connected with the… …   The Collaborative International Dictionary of English

  • shoulder girdle — n PECTORAL GIRDLE * * * the bony structure to which the bones of the upper limbs are attached. It consists of the right and left scapula (shoulder blades) and clavicles (collar bones). * * * thoracic girdle, girdle of upper limb cingulum… …   Medical dictionary

  • shoulder girdle — n. PECTORAL GIRDLE * * * …   Universalium

  • shoulder girdle — n. PECTORAL GIRDLE …   English World dictionary

  • shoulder girdle — noun the bony arch formed by the collarbones and shoulder blades in humans • Syn: ↑pectoral arch • Hypernyms: ↑arch • Part Holonyms: ↑pectoral girdle * * * noun : pectoral girdle …   Useful english dictionary

  • shoulder girdle — noun The human pectoral girdle, consisting of the collarbones and shoulder blades …   Wiktionary

  • shoulder girdle — pectoral girdle the bony structure to which the bones of the upper limbs are attached. It consists of the right and left scapulas (shoulder blades) and clavicles (collar bones) …   The new mediacal dictionary

  • shoulder girdle — noun Date: 1868 the bony or cartilaginous arch that supports the forelimbs of a vertebrate called also pectoral girdle …   New Collegiate Dictionary

  • shoulder girdle. — See pectoral girdle (def. 2). [1865 70] * * * …   Universalium

  • shoulder girdle. — See pectoral girdle (def. 2). [1865 70] …   Useful english dictionary

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