CONTENTS 



Introduction. 



PAGE 

 1 



By C. M. Jackson, M.S., M.D. 



SECTION I 



MORPHOGENESIS 



By C. M. Jackson, M.S., M.D. 



Segmentation of the Ovum 9 



Embryonic Disc and Derivatives 10 



Metamerism 15 



Branchiomerism 16 



PAGE 



Viscera and Limbs 18 



Prenatal Growth 22 



Variability 25 



References 25 



SECTION II 



OSTEOLOGY 



Bt Peter Thompson, M.D. 



The Skeleton 27 



I. The Axial Skeleton 29 



A. The Vertebral Column 29 



The Cervical Vertebrae 31 



The Thoracic Vertebrae 36 



The Lumbar Vertebrae 37 



The Sacrum 39 



The Coccygeal Vertebrae 42 



The Vertebral Column as a 



Whole 43 



B. Bones of the Skull 51 



The Occipital 51 



The Parietal 57 



The Frontal 59 



The Sphenoid 62 



The Sphenoidal Conchae 67 



The Epipteric and Wormian 



Bones 68 



The Temporal Bone 68 



The Tympanum 77 



The Osseous Labyrinth 80 



The Ethmoid 81 



The Inferior Nasal Concha. . . 84 



The Lacrimal Bone 85 



The Vomer 85 



The Nasal Bones 86 



The Maxilla or Upper Jaw 87 



The Palate Bone 91 



The Zygomatic or Malar Bone 93 



The Mandible or Lower Jaw. . 95 



The Hyoid Bone 99 



The Skull as a Whole 100 



The Orbits 109 



The Nasal Fossae 110 



The Interior of the Skull 112 



The Morphology of the Sk ull . 117 



The Skull at Birth 120 



C. The Thorax 126 



The Ribs 126 



The Sternum 132 



The Thorax as a Whole 138 



II. The Appendicular Skeleton 139 



A. Bones of the Upper Extremity. 139 



The Clavicle 139 



The Scapula 141 



The Humerus 146 



The Radius 152 



The Ulna 155 



The Carpus 159 



The Metacarpals 164 



The Phalanges 167 



B. Bones of the Lower Extremity . . 169 



The Coxal Bone 169 



The Pelvis 175 



The Femur or Thigh Bone. . . 178 



The Patella 184 



The Tibia 185 



The Fibula 189 



The Tarsus 191 



The Metatarsus 200 



The Phalanges 203 



The Bones of the Foot 205 



Homology of the Bones of the 



Extremities 206 



References 209 



IX 



