INDEX. 



779 



Muscle, composition of, 69 

 " thermal changes in during con- 

 traction, 70 

 action of constant current upon, 



75 



value of, as a machine, dependant 

 on the load, 87 ; further deter- 

 mined by the size and form of 

 the muscle, 88 

 ,, absolute power of, 89 

 ,, work done by, 89 

 influence of tempera ture on irri- 

 tability of, 93 



influence of blood-supply on irri- 

 tability of, 94 

 ,, influence of functional activity 



on irritability of, 95 

 ,, energy of, 98 

 properties of unstriated, 101 

 ,, glycogen in, 421 

 acid reaction of dead, 66 

 Muscle-currents, 58 



, , , , negative variation of, 6 1 

 Muscle-curve, 42*, 48* 

 Muscle nerve preparation, 77* 



,, ,, ,, as a machine, 83 



Muscle-plasma, 65 

 Muscle and nerve, phenomena of, 37 

 Muscles, cardiac, 102 



,, characteristics of cardiac, 180 

 employed in inspiration, 322 

 ,, chief source of heat of body, 



461 



of the eyebaU, 543, 544* 

 of the Larynx, 653 

 use of glycogen in foetal, 676 



weight of, 684 

 Muscular action, nature of, 98 



,, contraction compared with 

 amoeboid move- 

 ment, 35 

 ,, phenomena of a 



simple, 39 



M I* as affected by na- 



ture of stimulus, 

 83 



energy, 459 

 fibre undergoing contraction, 



55* 



irritability, 37 

 ,, mechanisms of digestion, 281 

 mechanisms, special, 651 

 sense, the, 582 

 Musical sounds, analysis of, 560 

 Myopic eye, its features, 496, 506 

 Myosin, 64, 712a 

 Myristic acid, 736a 



Negative variation of the muscle current, 



61 



,, ,, nerve current, 73 



Nerve, electric current of, 59* 



changes during the passage of 



a nervous impulse, 72 

 ,, action of constant current upon, 

 75 



Nerve changes caused by severance from 

 central nervous system in a, 91 

 ,, influence of temperature on irri- 

 tability of, 93 

 ,, and muscle, influence of blood 



supply on irritability of, 94 

 and muscle, influence of func- 

 tional activity on, 95 

 Nerve, influence of rest on, 97 

 ,, energy of, 98 



and muscle, phenomena of, 37 

 Nerves, circumstances determining irri- 

 tability of, 90 

 ,, differences between motor and 



sensory, 106 

 accelerator, 189 

 ,, vaso-motor, 199 

 ,, vaso-dilator, 210 

 ,, vaso-constrictor, 210 

 vaso-motor, of the veins, 215 

 ,, their influence on secretion and 



ejection of milk, 413 

 their influence on the spleen, 



433 



trophic, 471 

 ,, sensory, 481 

 ,, spinal, 482 

 cranial, 484, 648 

 ,, fibres, degeneration of, after 



section, 448 

 ,, governing the pupil of the eye, 



502 



Nervi erigentes, 210 

 Nervous action, nature of, 98 

 Nervous impulses, definition of, 38 



,, rate of propagation, 



47 

 curves illustrating 



their velocity, 46* 

 electrical phenomena 



attending, 72 

 avalanche theory of, 



86 



Nervous irritability, 37 



Nervous mechanism, of Heart beat, 181 



of secretion of 



gastric juice, 262 



,, of secretion of bile, 



264 



,, ,, of respiration, 353 



,, ,, of perspiration, 388 



nature and seat 



of co-ordinating, 



618 



system, simplest form of, 104* 

 ,, influence on nutrition, 



470 

 Nervous tissues, fundamental properties 



of, 104 

 Neurin, 745a 



New-born infant, respiration of, 679 

 ,, ,, circulation of, 679 



composition of, 684 

 growth of, 685 



function of, 685 



metabolism of, 685 



