(in fishes) either of a pair of fins usually situated behind the head, one on each side, and corresponding to the forelimbs of higher vertebrates.
either of a pair of fins, situated just behind the head in fishes, that help to control the direction of movement during locomotion
noun 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. noun 1. a skeletal support to which the front or upper limbs of a vertebrate are attached pectoral girdle n. A bony […]
[pek-tuh-ral-is, -rey-lis, -rah-] /ˌpɛk təˈræl ɪs, -ˈreɪ lɪs, -ˈrɑ-/ noun, plural pectorales [pek-tuh-ral-eez, -rey-leez, -rah-] /ˌpɛk təˈræl iz, -ˈreɪ liz, -ˈrɑ-/ (Show IPA). Anatomy. 1. either of two muscles on each side of the upper and anterior part of the thorax, the action of the larger (pectoralis major) assisting in drawing the shoulder forward and […]
- Pectoral muscle
noun 1. either of two large chest muscles (pectoralis major and pectoralis minor), that assist in movements of the shoulder and upper arm
- Pectoral nerve
pectoral nerve n. Either of two nerves, designated medial and lateral, that arise from the brachial plexus and pass to the pectoral muscles.