INDEX 



303 



Myelocytes, 79 

 Myeloid tissue, 77 

 Myoblasts, SI 

 Myofihrilhe, 81 

 Myogenic theory, 88 

 Myoid cells of thynuis, 132 

 Myometrium, 22.'i 

 Myxedema, 257 



N 



Nails, 146 

 Necrosis, 20 

 Nephridial tubule, 199 

 Nephron, 201 

 Nephrostome, 192 

 Nephrotonie, 192 

 Nerve cells, 95, 98-101 



degeneration, 108 



endings, 10-4 



fibers, 101 



histogenesis, 94 



IHMii.iicnd, 102, 103 



regeneration, 108 



tissue, 94 

 Nervi nervorum, 103 

 Neiu-al crest, 95 



groove, 25 



plate, 94 



tube, 95 

 Neurofibrils, 97 



Neurogenic theory of heart beat, 87 

 Neuroglia, 106 

 Neurolemma, 102 

 Neuron, 95 



bipolar, 99 



development of, 94 



ganglion 96, 101 



motor, 101 



multipolar, 99, 100 



processes of, 97, 100 



types of, 98 



unipolar, 99 

 Neutrophils (heterophils), 75 

 Nissl bodies, 96 

 Nodes of Ranvier, 102 

 Non-myelinated fibers, 102 

 Normoiolasts, 78 

 Notochord, 24, 68 

 Nuclear membrane, 17 

 Nucleic acid, 17 

 Nucleolus, 18 

 Nucleoproteins, 17 

 Nucleus, 17 



CEsoPHAGUs, 167. Sec Esophagus. 

 CEstrus, 226 

 Olfactory area, 151 

 Oocyte, 215 



Oral cavity, 159 



Oi'ange G, 288 



Oiganogeny, 26 



Os piiapi, 250 



Osmium tetroxide (osmic acid), 2()6 



Osmotic equilibrium, 72 



Ossification, eiidochondi-al, 6;5, 64, 65 



intramembranous, 61, 62 

 Ostein, 61 

 Osteoblasts, 62 

 Osteoclasts, 63 

 Osteocytes, 62 

 Ova, 209 



amphibian, 211, 212 



fish, 211 



mammalian, 213, 217 



origin of, 209 



reptile, 212, 213 

 Ovary, 209 



amphibian, 211, 212 



fish, 210 



frog, description of, 211, 212 



early development, 209 



endocrine activity, 214 



mammalian, 213 



early development, 214 

 structure of, 214, 215 



reptile, 212 



descrij^tion of lizard ovary, 

 213 

 Oviducts, 219 



amphibian, 220 



mammalian, 221, 223 



reptiUan, 221 

 Ovulation, 216 

 Oxychromatin, 18 

 Oxyhemoglobin, 72 



Pacinian corpuscles, 105 

 Pancreas, 181, 182, 183 



lower vertebrates, 184 

 Paper boat for embedding, 271 

 Papilhie, 160, 161 



circumvallate, 163 



filiform, 162 



folliate, 162, 163 



fungiform, 1()2 

 Paraffin embedding, 270 



oven, 270 



procedure in, 272 



sections, mounting of, 279 

 serial, 281 

 Paraganglia, 263 

 Parathyroids, 258, 259 

 Parotid glands, 164, 165 

 Pars convoluta, 199, 200 



distalis, 254 



intermedia, 255 



