86 GLOSSARY. 



Mo'tile (L. motus, motion). Capable of spontaneous move- 

 ment. 

 Mo'tor (L. a mover). Causing or setting-up motion. A term 



Applied to those nerves or nerve fibres which convey only 



impressions from a nerve-centre to muscles, thereby causing 



motion. 

 Moto'res oculo'rum (L. movers of the eyes). The third pair of 



cerebral nerves which are distributed to four out of the six 



muscles of each eye. 

 Moto'rius p'culi (L. mover of the eye). Another name for each 



of the third pair of cerebral nerves. 

 Mucila'ginous glands. A name formerly applied to the 



fringed vascular folds of the synovial membranes. 

 Mu'cin. The nitrogenous principle of mucus. 

 Mu'cor (L. mould in bread). A species of fungus. 

 Mu'cous (L. mucus, the secretion of the nose). Applied as an 



adjective to the membrane which lines^ all those parts of 



the body which open upon the exterior ; also to any viscid 



secretion. 

 Mu'cus (L. the secretion of the nose). The secretion of the 



mucous membranes. 

 Miille'rian duct (named after Miiller, who first described it). 



A duct developed in the foetus in connexion with each 



Wolfrian body. 

 Multicus'pid (L. multus, many ; cuspis, a pointed extremity). 



Having many cusps, as the molar teeth. 

 Multipo'lar (L. multus, many ; polus, the pole). Having many 



poles. Applied specially to those ganglionic nerve-cells 



which have several radiating processes. 

 Mul'tivalve (L. multus, many; valvce, folding doors). A term 



applied to those Gasteropod shells which are composed of 



several pieces. 

 Mus'cae volitan'tes (L. fluttering flies). Floating bodies in the 



vitreous humour of the eye. 



Muscula'ris mued'sae (L. muscular coat of the mucous mem- 

 brane). The deepest layer of the mucous membranes, 



formed by non-striated muscular fibre. 

 Mus'culi papilla/res (L. papillary muscles). The muscular 



elevations in the ventricles of the heart to which the 



chordae tendineae are attached. 

 Mus'culi pectina'ti (L. comb-like muscles). The muscular 



bundles which form the ridges in the auricular appendages 



of the heart. 



