322 



HUMAN EMBRYOLOGY AND MORPHOLOGY. 



Primitive segments, 147. 

 Primitive streak, 89. 

 Primitive utricle, 57. 

 Primordial ova, 84, 94. 

 Processus vaginalis, 131. 

 Proctodaeum, 119. 

 Pronephros, 105. 

 Pro-otic centre, 59. 

 Prostate, 126. 

 Proto-vertebrae, 147. 

 Psoas parvus, 312. 

 Pterion, 164. 

 Pterotic, 59. 

 Pterygo-palatine bar, 9. 

 Pubes, 299. 

 Pulmonary artery, 37. 

 Pulp of teeth, 66. 

 Pyramidalis, 311. 

 Pyramid of thyroid, 46. 

 Pyriform fossa, 33. 



Radiale, 303. 



Rathke's pocket, 19. 



Rauber's layer, 88. 



Recto-vesical fascia, 140. 



Bectum, 275. 



Renal Wolffian tubules, 106, 107. 



Retina, 179. 



Retro-caecal fossa, 280. 



Rhinencephalon, 22, 206. 



Ribs, 152. 



Ribs, Formation of, 284. 



Ribs, vestigial, 152. 



Riedel's lobe, 265. 



Roof of skull, Development of, 162. 



Sacral plexus, 297. 



Sacro-coecygeal region, Variations of, 



145. 

 Sacro-lumbar regions, Variations of, 



144. 

 Salivary glands, Origin of, 42. 

 Scalp, Muscles of, 308. 

 Scansorius, 312. 

 Scaphoid, 306. 

 Scapula, 300. 

 Sclerotic, 184. 

 Sclerotome, 146. 



Scrotum, 124. 

 Sebaceous glands, 74. 

 Secondary sulci, 219. 

 Second digit, 308. 

 Seessel's pocket, 43. 

 Segmentation of body, 155. 

 Segment, Constitution of, 155. 

 Sensori-motor areas of brain, 218. 

 Septal cartilage, 4. 

 Septum primum of auricle, 240. 

 Septum secundum of auricle, 240. 

 Septum transversum, 257, 258. 

 Shoulder girdle, 298. 

 Sigmoid flexure, 275. 

 Simian fissure, 218. 

 Sinus subpericardiacus, 255. 

 Sinus venosus, 235. 

 Sinus venosus, Valves of, 237. 

 Skeleton of body segment, 156. 

 Skene's tubules, 126. 

 Skin, 70. 



Skull, Development of, 161. 

 Skull, Primitive membranous, 161. 

 Somatopleure, 90, 224. 

 Spermatozoa, 93. 

 Sphenoidal sinus, 25. 

 Sphenoidal turbinate bone, 25. 

 Sphenoid, Development of, 169. 

 Spigelian lobe of liver, 265. 

 Spina-bifida, 194. 

 Spinal column, 142. 

 Spinal column, Curves of, 143. 

 Spinal column, Evolution and develop- 

 ment of, 145. 

 Spinal cord, 194. 



Spinal cord, Development of, 195. 

 Spine, Pyramids of, 142. 

 Splanchnocele, 242. 

 Splanchnopleure, 90. 

 Spleen, 267. 

 Squamosal, 163. 

 Stapes, 59. 

 Sternalis, 310. 

 Sternebrae, 285. 

 Sterno-mastoid, 310. 

 Sternum, 284. 



Sternum, Development of, 286. 

 Stomach, 266. 



