muscle

(mus'l) [L. fnusculus.] One of the contractile organs of the body by which the movements of the various organs and parts are effected. The typical muscle is a ma of fleshy ti ue (venter or belly), attached at each extremity, by means of a tendon, to a bone or other structure; the narrowing part of the belly which Is attached to the tendon of origin or Insertion is called the caput or head; the points of attachment of a muscle are called its origin and insertion, the attachment to the more movable part of the skeleton or to the part which is moved by contraction of the muscle being the insertion, the other the origin. The individual muscles are defined under muscid us. an tag on is'tic muscles, those having an opposite function, the contraction of one neutralizing that of the other, appendic'ular m., one of the skeletal muscles of the limbs, artic'ular m., joint-muscle, ax'ial m., one of the skeletal muscles of the trunk or head. bipenn'ate m., one having a central tendon toward which the fibers converge on either side hke the barbs of a feather, dig as'tric m., one with two fleshy bellies separated by a fibrous insertion, fu's iform m., spindle-shaped, one which has a fleshy belly, tapering at either extremity. invol'untary m., smooth or unstraitedm. organ'ic m., unstraited m. penn'ate m., one which has a central or lateral tendon toward which the fibers run, from one or both sides, like the barbs of a feather, ri'der's muscles, the abductor muscles of the thigh which come into play especially in horseback riding, skel'etal m., a muscle connected at either or both extremities with the bony framework of the body; it may be an appendicular or an axial m. skew m., one which draws a part obliquely; or one which is deflected in its course, the belly of insertion and that of origin pulling in different planes, smooth m., unstrlated m. str i'ated m., striped m., one of the skeletal muscles. Including also the heart; voluntary m. see muscular ti ue* synergis'tic muscles, muscles having a similar and mutually helpful function or action, unipenn'ate m., one with a lateral tendon to which the fibers are attached, like the half of a feather, unstri'ated m., unstriped m'., smooth, organic or involuntary m., one of the muscles of the internal organs, intestines, blood-ve els, etc. vol'untary m., one whose action is under the control of the will all the striated muscles, except the heart, are volimtary muscles. aiding another, synergist, congener, atrophy, amyotrophy, my atrophy, myoatrophy, myodystrophy. bending a part, flexor, compre ing a part, constrictor. contractility, my on i city. contraction, myospasis; contracture (permanent) myotonia, tetanus (continuous) myoclonia (intermittent);; jactitation, myopalmus,; myotyrbe, myoseism, chorea (irregular); dyscinesia (painful) crispation, hypo cines i a (slight) hyper cines i a (exce ive),; controlling an orifice, sphincter,; description, myography, disease, myopathy, myonosus. drawing away from midline, abductor, drawing toward midline, adductor, edema, my oedema. expelling a secretion, detrusor, ejaculator. fatty degeneration, myodemia, myoliposis. fibrillary contraction, myokymia, fibrous degeneration, my of i bros is, hardening, myosclerosis, harmonious action, coordination, synergia. hernia through sheath, myocele.