246 



PHYSIOLOGY AND HEALTH. 



Some are long and flat, as the ribs, (Fig. XV.) The bones 

 of the arms and legs are long and roundish. The vertebrae, 

 (Fig. XXXIV,) or the parts of the spine^and the bones of 

 the wrist (Fig. XXXVIII.)' and ankle, (Fig. XL.,j are more 

 compact. The bones of the pelvis (Fig. XXXII.j are irregular 



FIG. XXXII. Skeleton. 



a, Head, or cranium. 



b, b, Chest. 



c, c, Back-bone, or spine. 



d, d, Pelvis. 



e, Breast-bone, or sternum. 



f, f, Ribs. 



g, g, Collar-bone, or clavicle. 



A, h, Upper arm-bone, or humerus. 



t, i, Bones of -the forjs arm. 



k, k t Bones of the hands and fingers. 



/, 7, Thigh-bone, or femur. 



m, m, Bones olthe leg. 



n, n, Bones of the foot. 



in shape. The bones have various projections, which serve 

 for the attachment of the muscles, and apertures for the 

 blood-vessels and nerves to pass through ; and all are made 

 to fit their places in the structure, and fulfil their purposes in 

 the animal economy. 



