Pectoral girdle

Pectoral girdle

Infobox Bone
Name = Pectoral girdle
Latin = cingulum pectorale
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Caption = Human pectoral girdle

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The pectoral girdle is the set of bones which connect the upper limb to the axial skeleton on each side. It consists of the clavicle and scapula in humans and, in those species with three bones in the pectoral girdle, the coracoid. Some mammalian species (e.g. dog and horse) have evolved to have only the scapula.

In humans, the only joints between shoulder girdle and axial skeleton are the sternoclavicular joints on each side. No joint exists between each scapula and the thoracic cage, instead the muscular connection between the two permits relatively great mobility of the shoulder girdle in relation to the pelvic girdle.

In those species having only the scapula, no joint exists between the forelimb and the thorax, the only attachment being muscular.

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Look at other dictionaries:

  • 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 — n the bony or cartilaginous arch supporting the forelimbs of a vertebrate that corresponds to the pelvic girdle of the hind limbs but is usu. not attached to the spinal column and that consists in lower forms of a single cartilage on each side… …   Medical dictionary

  • pectoral girdle — n. Anat. Zool. the bony or cartilaginous structures to which the forelimbs (or arms) of a vertebrate are attached …   English World dictionary

  • 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 …   Dictionary of ichthyology

  • pectoral girdle — noun a skeletal support to which the forelimbs of vertebrates are attached • Hypernyms: ↑girdle • Part Holonyms: ↑appendicular skeleton • Part Meronyms: ↑shoulder girdle, ↑pectoral arch …   Useful english dictionary

  • pectoral girdle — 1. (in vertebrates) a bony or cartilaginous arch supporting the forelimbs. 2. Also called shoulder girdle. (in humans) the bony arch formed by the clavicles, or collarbones, and scapulas, or shoulder blades. Also called pectoral arch. [1885 90] * …   Universalium

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

  • pectoral girdle — noun The bony or cartilaginous assembly that supports the forelimbs in vertebrates Syn: shoulder girdle …   Wiktionary

  • pectoral girdle — see shoulder girdle …   The new mediacal dictionary

  • pectoral girdle — pec′toral gir′dle n. anat. the compound bony or cartilaginous arch supporting the forelimbs or analogous parts in vertebrates • Etymology: 1885–90 …   From formal English to slang

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