INDEX 



319 



Cerebellum, 166 



Cerebral hemispheres, 164, 165 



origin of, 133 

 Cerebrospinal fluid, 163 

 Chemical differentiation, 107 

 Chemotaxis, in nerve development, 151 

 Chick (see also Chick embryo), 



effect of Vitamin E, 264 



embryonic induction in, 81 



extraembryonic membranes of, 172 



homology with amphibian, 80 



limb development in, 105 



organizer of, 81 



sex reversal in, 300, 302 

 Chick embryo, 



48-hr., 216, 218, 219, 220, 221, 222 



72-hr., 222-227 



16-hr., 209 



34-hr., 213 



33-hr., 214 



25-hr., 211 

 Chordamesoderm, 77 

 Chorioallantoic membrane, 



differentiations of heart on, 190 



differentiations of liver on, 190 



structure of, 174 



transplantation to, 105 

 Chorion, 



in chick, 175 

 48-hr., 218 



function of, 172 



in human, 260, 268, 269, 270 



hormone from, 23 



relation to allantois, 174 



of villus, 285 

 Chorionic gonadotropic hormone (chori 



onic gonadotrophin), 260, 261 

 Choroid fissure, 169 

 Choroid plexus, 166 

 Cilia, 



in frog embryo, 132 



and ovulation, 16 



in sea urchin, 29 

 Circulation (see also Circulatory system), 



in blue baby, 184 



in cardinal venous system, 180, 181 



changes in, at birth, 290, 291 



through ductus arteriosus, 183, 184 



ductus venosus, in, 181, 182 



in frog embryo, 132, 135, 136 



at hatching, 182-184 



through heart, 182-183 



Circulation — (Continued} 



of hepatic portal system, 181, 782 



in inferior vena cava, 180, 181 



through liver, 181, 182 



through lungs, 184 



to metanephros, 180, 181 



in 3-week human embryo, 276 

 Circulatory system (see also Circulation) , 



abnormalities in, 171 



in chick embryo, 17 3, 174, 111 



development of, 171 



in frog embryo, 1 36 



in human embryo, 276 



onset of, 177 



relation of, to excretory system, 178 

 Cleavage, 



in chick, 204 



equal, 115 



of frog egg, 113, 114 



holoblastic, 115 



horizontal, 115, 116 



in mammal, 266 



meridional, 115 



meroblastic, 115 



of salamander egg, 115, 116 



unequal, 115, 116 

 Cloaca, 190 (see also Anus), 



in chick, 196, 197 

 Coelom, 



of chick, 

 48-hr., 220 

 12-hr., 226 



of frog, 137 

 Commissure, 164, 165 

 Common cardinal vein, in chick, 174 

 Cone of growth, 143 



chemical effects on, 150 



electrical effects on, 149, 150 



mechanical effects on, 151 

 Connective tissue, of viscera, 200 

 Corium (dermis), from dermatome, 195 

 Cornea, 167, 769 

 Corona radiata, 266 

 Corpus luteum, 258 



effect on implantation, 262 



effect on ovulation, 22 



effect on pregnancy, 262 



hormones of, 261, 262, 263 



structure of, 21 

 Cortex, of egg, 32 

 Cranial nerves, 166 

 Cross-fertilization, 49 



