pectoral 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. Also called scapular girdle

Dictionary of ichthyology. 2009.

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  • Pectoral girdle — Pectoral Pec to*ral (p[e^]k t[ o]*ral), a. [L. pectoralis, fr. pectus, oris the breast; cf. F. pectoral.] 1. Of or pertaining to the breast, or chest; as, the pectoral muscles. [1913 Webster] 2. Relating to, or good for, diseases of the chest or… …   The Collaborative International Dictionary of English

  • pectoral girdle — noun Date: circa 1890 shoulder girdle …   New Collegiate Dictionary

  • Pectoral — Pec to*ral (p[e^]k t[ o]*ral), a. [L. pectoralis, fr. pectus, oris the breast; cf. F. pectoral.] 1. Of or pertaining to the breast, or chest; as, the pectoral muscles. [1913 Webster] 2. Relating to, or good for, diseases of the chest or lungs; as …   The Collaborative International Dictionary of English

  • Pectoral arch — Pectoral Pec to*ral (p[e^]k t[ o]*ral), a. [L. pectoralis, fr. pectus, oris the breast; cf. F. pectoral.] 1. Of or pertaining to the breast, or chest; as, the pectoral muscles. [1913 Webster] 2. Relating to, or good for, diseases of the chest or… …   The Collaborative International Dictionary of English

  • Pectoral cross — Pectoral Pec to*ral (p[e^]k t[ o]*ral), a. [L. pectoralis, fr. pectus, oris the breast; cf. F. pectoral.] 1. Of or pertaining to the breast, or chest; as, the pectoral muscles. [1913 Webster] 2. Relating to, or good for, diseases of the chest or… …   The Collaborative International Dictionary of English

  • Pectoral fins — Pectoral Pec to*ral (p[e^]k t[ o]*ral), a. [L. pectoralis, fr. pectus, oris the breast; cf. F. pectoral.] 1. Of or pertaining to the breast, or chest; as, the pectoral muscles. [1913 Webster] 2. Relating to, or good for, diseases of the chest or… …   The Collaborative International Dictionary of English

  • Pectoral rail — Pectoral Pec to*ral (p[e^]k t[ o]*ral), a. [L. pectoralis, fr. pectus, oris the breast; cf. F. pectoral.] 1. Of or pertaining to the breast, or chest; as, the pectoral muscles. [1913 Webster] 2. Relating to, or good for, diseases of the chest or… …   The Collaborative International Dictionary of English

  • Pectoral sandpiper — Pectoral Pec to*ral (p[e^]k t[ o]*ral), a. [L. pectoralis, fr. pectus, oris the breast; cf. F. pectoral.] 1. Of or pertaining to the breast, or chest; as, the pectoral muscles. [1913 Webster] 2. Relating to, or good for, diseases of the chest or… …   The Collaborative International Dictionary of English

  • Pectoral — Girdle Gir dle, n. [OE. gurdel, girdel, AS. gyrdel, fr. gyrdan; akin to D. gordel, G. g[ u]rtel, Icel. gyr?ill. See {Gird}, v. t., to encircle, and cf. {Girth}, n.] [1913 Webster] 1. That which girds, encircles, or incloses; a circumference; a… …   The Collaborative International Dictionary of English

  • Girdle — Gir dle, n. [OE. gurdel, girdel, AS. gyrdel, fr. gyrdan; akin to D. gordel, G. g[ u]rtel, Icel. gyr?ill. See {Gird}, v. t., to encircle, and cf. {Girth}, n.] [1913 Webster] 1. That which girds, encircles, or incloses; a circumference; a belt; esp …   The Collaborative International Dictionary of English

  • girdle — Gir dle, n. [OE. gurdel, girdel, AS. gyrdel, fr. gyrdan; akin to D. gordel, G. g[ u]rtel, Icel. gyr?ill. See {Gird}, v. t., to encircle, and cf. {Girth}, n.] [1913 Webster] 1. That which girds, encircles, or incloses; a circumference; a belt; esp …   The Collaborative International Dictionary of English

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