WebTetrapods - early ones had pectoral girdle similar to those of early bony fishes, but lost posttemporal & acquired interclavicle (which still occurs in several amniotes, e.g., ... each consists of a series of phalanges; general ‘formula' (starting at thumb) = 2,3,4,5,3; Adaptive modifications of the manus WebThe pectoral girdle consists of the clavicle and the scapula, which serve to attach the upper limb to the sternum of the axial skeleton. ... Also, the clavicle of each pectoral girdle is anchored to the axial skeleton by a single, highly mobile joint. This allows for the extensive mobility of the entire pectoral girdle, which enhances movements ...
Each half of pectoral girdle consists of: 1. one bone 2. two bones …
WebEach of the two pectoral (shoulder) girdles consists of two bones: the S‐shaped clavicle and the flat, triangular scapula. The clavicle articulates with the sternum and the scapula. In turn, the scapula articulates with the humerus of the arm. Figure 1 illustrates details of these bones. Figure 1.The pectoral girdle. WebNov 17, 2024 · Each of these types of teeth has a different shape that reflects its function during chewing: Incisors are flat and shovel shaped and are used to bite into a food item. Canines are conical, with a single pointed cusp used to puncture a food item. ... Pectoral Girdle. The pectoral girdle consists of the clavicle and the scapula, and it serves as ... css label line break
17.3: Human Skeletal System - Social Sci LibreTexts
WebThe appendicular skeleton includes all of the limb bones, plus the bones that unite each limb with the axial skeleton (Figure 8.2). The bones that attach each upper limb to the axial skeleton form the pectoral girdle (shoulder girdle). This consists of two bones, the scapula and clavicle (Figure 8.3). The clavicle (collarbone) is an S-shaped ... WebJun 8, 2024 · Figure \(\PageIndex{1}\): Pectoral girdle: (a) The pectoral girdle in primates consists of the clavicles and scapulae. (b) The posterior view reveals the spine of the scapula to which muscle attaches. The scapulae are flat, triangular bones that are located at the back of the pectoral girdle. They support the muscles crossing the shoulder joint. WebThe pectoral girdle is formed of two halves. Each half of pectoral girdle consists of a clavicle and a scapula. The Scapula articulates with the clavicle and humerus. The … cssk school