INDEX AND GLOSSARY 



337 



MUNK, H., 300 

 Muscarin, 231 



Muscle, Muscles, of arm, motor 

 nuclei of, 129 



cardiac, the muscle of the heart, a 

 visceral muscle whose fibers are 

 cross-striated, 93, 148, 224, 234 



of eyeball. See Eye, muscles of. 



of facial expression, innervation of, 

 144, 146, 244, 261 



intercostal, innervation of, 236- 

 240 



involuntary, muscles not under di- 

 rect control of the will; they are 

 of the general visceral type, 93 



nerve endings in, 86, 87, 90, 92, 93 



respiratory, 236-239 



sense, 77, 87, 132, 141, 146, 172- 

 180, 242 



skeletal. See Muscle, somatic. 



smooth or unstriated, visceral 

 muscle whose fibers are not 

 cross-striated, 87, 93, 147, 148 



somatic, striated muscles derived 

 from the Somites of the embryo, 

 skeletal muscles, 87, 92, 145, 

 147, 148 



spindle, a bundle of muscle-fibers, 

 smaller than ordinary fibers, 

 which are supplied with special 

 nerve endings of the muscle 

 sense in addition to typical 

 motor End-plates, 87 



sternocleidomastoid, 144, 147 



striated, composed of fibers hav- 

 ing a cross-striped appearance; 

 may be somatic or visceral, 87, 

 92,93 



synergic, muscles which act to- 

 gether for the performance of a 

 movement. :{.">, 3(X> 



of tongue. See Tongue, muscles of. 



trapexius, innervation of, 144, 147 



visceral, unstriated or striated 

 muscles not derived from the 

 Somites of the embryo ; may be 

 involuntary or voluntary, 87, 

 93, 94, 126, 14X, _'_'! 



voluntary, muscles under direct 



control of the will; may be 



either somatic or visceral, 92, 



93,94 



Mustelus, nervous system of, 111, 



112 



22 



Mycetozoa, 22 



Myel (myelon), the Spinal cord. 



Myelencephalon (afterbrain), the 

 posterior part of the Rhomben- 

 cephalon, or that portion of the 

 Medulla oblongata lying behind 

 the Pons and Cerebellum, 117, 

 118, 119, 121, 122 



Myelin, a f at-like substance formed as 

 a sheath around the myelinated 

 (medullated) nerve-fibers. 46 

 sheath, an envelope of Myelin 

 around the Axis-cylinder of some 

 nerve-fibers, 40, 46, 108, 286 



Myelogeny, the sequence of matura- 

 tion of the Myelin sheaths of 

 nerve-fibers in the development of 

 the central nervous system, 286, 

 287, 288 



Myelon (myel), the Spinal cord. 



Myotom. See Somites. 



Myxomycetes, 22 



Nates. See Colliculus superior. 

 Nausea, apparatus of, 89 

 Necturus, nervous system of, 62, 63 

 Neencephalon, the new brain, i. e., 

 the cerebral cortex and its depend- 

 encies, 115, 263 



Negative variation in nerve-fibers, 96 

 Neopallium, the non-olfactory part 

 of the cerebral cortex, or somatic 

 cortex, 217, 220, 221 

 Neothalamus (new thalamus), the 

 phylogenetically new part of the 

 Thalamus, which is a cortical de- 

 pendency, 163-167, 263, 3<X> 

 Nerve (nervus), any bundle of nerve- 

 fibers outside the central ner- 

 vous system, 28, 106 

 abducens (VI cranial nerve), 114, 

 120, 143, 145, 146, 148, 150, 

 180, 186 



accelerator, of heart, 234. 

 accessory (XI cranial nerve), 120, 



144. U.->. 1 17, 14S, 244 

 acoustic (VIII cranial nerve, audi- 

 tory nerve, nervus acusticiist, 

 110, 111,112,114, 120. 1 i:i. 1 }.'.. 

 147, 149, 1.83, 199, 200, 201 

 afferent. See Afferent. 

 anterior cutaneous, 125 

 auditory. See Nerve, acoustic. 



