Index 



877 



Mammals, respiratory control in, 257 



seasonal color change in, 766 



skeletal muscle of, nerve endings in, 505 



small, oxygen consumption of, 226, 227 



spinal reflexes in, 826 



temperature regulation in, physical 

 mechanisms in, 366 



urea excretion in, 198 



uricolytic enzymes in, 204, 205 

 Man, amino acid requirements for, 121 



carbon dioxide combining power in, 

 329, 330 



electrocardiograms in, 553 



essential amino acids for, 117 



eye in, 393 



olfaction in, 454, 459 



phonoreception in, 473-483 

 range, 478 



requirement of linoleic acid in, 134 



spinal reflexes in, 826 



taste sense in, 455 



thermoreception in, 364 



See also Mammals. 

 Mantis, praying, brain in, 820 

 Mating, color change and, 716 



luminescence and, 673 

 Mechanoreception, 502-514 

 Mechanoreceptors, adaptation of, 510 



histological types, 503 

 Medulla oblongata, functions of, 830 

 Melanin as retinal pigment, 764 

 Melanophores, 681. See also Chromato- 

 phores. 



in fish, 706 



in reptiles, 712 

 Melanotus, oxygen consumption in, 243 

 Membrane, basilar, 475 



cell, electrical phases of, 778 



permeability in Protozoa, 39. See also 

 Permeability. 



Reissner's, 475 



tympanic, 473 

 Mesidotea, blood chloride in, 86, 87 



osmoregulation in, 26 

 Mesotrophic organisms, 113 

 Metabolism, adaptations in, 268-277 



and respiration, 209-289 



basal, in arthropods, hormones and, 759 

 in temperature regulation, 369 



intermediary, hormones and, 756 



See also Oxygen consumption. 

 Metachronism of cilia, 646 

 Metamorphosis in amphibians, hormones 

 and, 728 



in insects, 732 

 Metatrophic organisms, 113 

 Methemoglobin, absorption spectra of, 298, 



299 

 Methionine, structural formula, 119 

 Microphonic effect of cochlea, 477 



Midbrain, functions of, 833 

 Migration, 371 



hormones and, 766 

 Modiolus, 475 



Molds, thiamine requirements in, 123 

 Molgula, osmotic adjustment in, 14 

 Molluscs, anaerobiosis in, 273 



blood pressure in, 539 



blood protein in, 104 



chemoreception in, 449 



cholinergic systems in muscles in, 610 



conditioned responses in, 844 



exopeptidases in, 166 



fat digestion in, 177 



fresh-water osmoregulation in, 35 



function of shell in, 97 



ganglionic reflexes in, 815 



giant fibers in, 788 



heart in, 544, 546 



ions in body fluids in, 82 



light sensitivity in, 383 



luminescence in, 664 



nerve conduction in, 784, 785 



nervous regulation of heart in, 558 



nervous system in, 812 



neuromuscular transmission in, 613 



nitrogen excretion in, 191, 193 



osmotic adjustment in, 12 



oxygen transport in, 326 



pH of digestive organs, 152 



photoreception in, 383, 384 



proteinases of, 160 



respiratory control in, 263 



respiratory mechanisms in, 214 



respiratory responses in, 265 



site of digestion in, 151 



uricolytic enzymes in, 203, 204, 205 

 Molpadin, 293 



absorption spectrum of, 300 

 Molt in crustaceans, 737 



in insects, 732 



seasonal, hormonal control, 765 

 Monas, flagellum in, 644, 645 

 Mosaic image, 391 



Mosquito, larvae of. ionic concentration 

 in, 88 



osmoregulation in, 33 

 Mouse, oxygen consumption of, 227, 248 

 Mouth, 147 



Movement, amoeboid, 630-639. See also 

 Amoeboid movement. 



ciliary, 640-653 



characteristics of, 643 

 theories of, 650 



in gregarines, 638 



perception of, 402 

 Mucus, as feeding mechanism, 145 

 Muscarine, 561 

 Muscle(s), 576-629 



cholinergic systems in, 608 



