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Show OfM'YOLOGY. 145- A Mnfi/t is capable of two Motions, the one of'Exr (jam-m)" The Mufelcs né‘t principally by C'oz‘z‘rm m 207:, the other of ‘F/afi, when the Belly bfit {wells and hardens, as is ealy t) perceive in the temporal and my??in hiya/w. 0f the l‘viUSCLES in particular. ARCOLOGY, which treats ofthe {oft Parts, is divided into MYOLOCY. SrtAncnnotocY, ANCEIOLOGY, NEUROLOGY, and ADENOLOGY The firlt in Order, and which naturally follows the Bones, 18 1‘4 0 L o G r, qr the MUSCLES in general; MYOLOGY treats of the [Pill/(1'55, which are Organs, by which the Mo,- tions of all Parts of the Body are performed. They are chiefly compo: fed of Fibres, the one Part of which is flelhy, and the other tendinou; Thefe Fibres are made up into a kind of Bundles, and arranged on‘tlte Sides of each other longitudinally. .'1‘he{e Bundles have their particu lar Covering or Sheath, which join among themlelves. Thefe Sheath». which are membranous and cellular, ieem to be a Continuation of the Membrane/which covers each Mufcle in particular. \ , . . The capillary Extremities ofthe Arteries and Veins, which are (blin- buted to the Mufcles, make, by their numerous Ramihcati‘ons, a wonder- ful Net-work upon the iiefhy Subflance of the Fz'hng Man-rm: And the Nerves, by their exceeding fine Divifiuns {cent to connect thefe Fibres t) each other, . _ All the Mufeles are commonly confidered with Refpeé‘t to their BoDIES and Exa‘nmn'rirs. The Body is the flelhy Part, and generally occupies the Middle, and is frequently called the Belly of the Mulch: The Exfremz‘tie; are Called Tenn/0725 and ripamurq/w : They are laid to be Tcndons, when the Fibres ofwllich they are compel-ed are united toge- thcr in the Manner of a Cord; and they are called A7p071eur0/2r, when the fame Fibres, inflead of being united in a Cord, expand theu‘iielre: , into a Membrane. The Mul‘eles are of two Sorts, #5171"an and palm/form. The ferrite: have their Fibres altnolt parallel, in the fame Direction, or near inn-nit. the Exit ofthe Mulch; and the latter have their Fibres joined m an oblique Direction, to a Tendon palling in or near the Axis, or on their C'utlide. 'l'he rcrri/z'mzar Mufc/e; are never ofany confiderable 'i"hici:ncls, rnleis they are very lsng. Some Mulclcs have their Fibres arranged In the lxlannet of Raa'i'z', as may be {een in the Jaw, and are called CI‘UI‘flf/i‘yti: or Haifa-w". There are fomc, whofe Fibres are circular, and make a ltniu ol‘a Run), the the may/m Alzflle: of the Eye-lids, and the Sphinfl'er oi The Mnscnrs may be divided into three Clalfes; tliole of the HEAD, tholc (it-"the TRUNK1 and thoi'e of the EXTREMITIES. In the HEAD the Skin of the Craairgm ha a Motion by the Means of inni- Mnl‘clcs, called the at ‘1 'rn/andflmmf. Thefe are llender Muleles {cited on the lore and hinder l'arrs of the Head, being clofely joined to the Skin. '1 hey have the general Name of OCCII‘ JTO-FRONTALIS; it mile; uchind each liar, and becoming tendinous, rallies under the hairy Scalp to the Forehead, and is inferred into the orbicular h'lul‘clc s of the Eye-lids, into the O: Fro/7H5, near the Note, and by two l'rocefl es into the Bones of the Nofe. lies l'crfons to frown. lt ferves to wrinkle the Forehead, and ena~ littrii'rok Aunt cum: aril'es from the Tendon oFtlte Or‘t/fiz‘ xafi-czz5127:. and is inferted into the upper Part ofthe Eur, that is connet‘ied to he Head. RETRAC'ron AURICULJE arile by one. two, Portions from the temporal Bone above the the mamill or three {mall ary Procefs, and is iiilbi‘tcd into the Ear, to pull it backward. The lire-L1 D5 have two hiul‘eles, one of which is common to both ii} the other is proper to the upper: The firth is called Orlv'm/n7-:~‘_.-, anti {er-res to that them, in winang. The feeond is the Elevator of tire upper Eye-lid. The Umbra/am} lurroun ds the Eye-lid< on the Edge 0! the Orbit. 'l'he Tendon is on the Side ofthc I‘Toie, where it is fixed {0151? 716/351 Atcpgtfr ot‘the maxillary Bone. The Cit. : AR is is a {mall l‘ortzon ofthis Murcie, next the Ciliary Cartila t e of the i , : lids. The .rtr is fixed in the Bott E'" oin of the Orbit, a:,1 t.* t ernnnates on the Edge eithe upper lire-lid. .ie yr has fix Mulcles, diliinquilhed into rig/J! and 55/212,»: : The 'i our in Number, and are called E/mai‘cr, Dim-yer, .d7z/tz'zMFs.»-, ‘7‘"; L! They are fixed in the Bottom of the Orbit, and advan ce "l Vic Circumference of the tray/2mm (Jar-m a, uhere each of them tenninstes in an "I'd/'Mzrrc/Es. O r 1] v . 1 ' (alfcléegl‘h'gz/w are Odillinguilhed into grmt andflmll _; The‘gi‘m.‘ out having Sliitiailifi ls fixed in. the Bottorn of the Ol'blt,‘ and its Tendon Ci‘lllcbérbj: 0t igugl‘lla cartilaginous. Ring or} nlley, prvacedNon the Ed ge C on the 89116 {Side of the Noie, ternnustes in title- (glob of the Iii: lidon 2" thiflcoféxthe aha/trier Illa/[{c. 7VI‘he[rm/Z Cali/fa? e IS fintd on in ‘llfiaii lobe -f i. 1L,:On tneqbrde of the rfofe, and {Cfml n tes littewrfe ' "f likewil'e dil'tinguiflted into full and hollow; the full L‘s ity in their Subtiance, and are dellined to more the ill‘ ()rgan, as the i'lIuy'rz'es of the Eye; and 70".}!"5‘ Ur. The Lenka: .lx'zffl‘lt'r are thofe, whofe F1.- Manner as {'3 form a Cavity more 01‘ if?" e certain Subilances, which are to recent" of the Mufcle, fnch as the Heart, ""3 "3/ A Mil/0‘1 "WW/am "do lme] Lye. i he former mitts Lie l‘up... outwa and rd 1 0 1,0,"; 1 "Cf ‘atrer turns it upward and inwar d. '7 . [hwy/fire)"; £35,] GET-'Mulmes, (tort) of a. circle, cant-in mama: and ill the hlaxillqr , 1;: :‘1 [15‘ fixed 1;] the hone of the 1:4 ore. :(tndfltlie "lat; the Note, and lervenzo- )l'heybotnr terminate "in tn: lone; vapp: age) 00 ttxtmt‘tthern and‘ ‘f‘ufl'te ll‘, the 3 15 a l ortion of the on. L fi ‘ i. ' . , ifruciet 1:58 i The |