MUSCLE 



370 



MUSCULAMIN 



See Pronator quadratus in Table (lllus. Diet.). M. 

 pronator obliquus, M. pronator rotundus. See 

 P. radii teres in Table (lllus. Diet.). M. prona- 

 tor teres, the pronator radii teres. M. proprius 

 auris externae. See Retrahens aurem in Table 

 (lllus. Diet.). M. psoas internus, the psoas magnus. 

 M. pterygoideus major, the internal pterygoid mus- 

 cle. M.pterygoideus minor, the external pterygoid 

 muscle. M. pterygoideus tertius, an inconstant 

 muscular fascicle having its origin with the external 

 pterygoid and inserted into the interarticular fibrocarti- 

 lage of the temporomaxillary joint. M.s, Pterygo- 

 maxillary, the pterygoid muscles. M., Pterygo- 

 palatal or Pterygopalatine, the portion of the levator 

 palati passing from the hamular process of the sphenoid 

 bone to the palate bone. M. pterygostaphylinus 

 externus. Same as Tensor palati. M. pterygo- 

 staphylinus internus, the levator palati. M.s, Pu- 

 bovesical, a bundle of muscular fibers taking origin 

 in the back of the pubes and extending with the anterior 

 true ligament of the bladder to lose itself in the super- 

 ficial muscular layer of the bladder. M., Pyloric. 

 See Sphincter pyloric us. M. quadratus dorsi. 

 Same as Q. lumborum. M. quadratus genae. 

 See Platysma myoides in Table (lllus. Diet.). M. 

 quadratus labii inferioris. See Depressor labii in- 

 ferioris in Table (lllus. Diet.). M. radialis anterior, 

 M. r. internus, the flexor carpi radialis. M. radia- 

 lis externus brevis. See Extensor carpi radialis 

 brevier in Table (lllus. Diet.). M. rectus capitis 

 posticus profundus. See Rectus c. p. minor in 

 Table (lllus. Diet.). M. rectus capitis posticus 

 superficialis or inferior, the rectus capitis posticus 

 major muscle. M.s. Reisseisen's, the muscular 

 fibers of the bronchi. M., Rouget's, the circu- 

 lar bundles of muscular fibers which form part of 

 the ciliary muscle and are situated nearest to the iris. 

 Syn., Midler'' s muscle. M., Ruysch's Uterine, 

 the muscular tissue of the fundus uteri, which was be- 

 lieved by Ruysch to act independently of that of the 

 rest of the uterine muscle. M. sacrococcygeus pos- 

 ticus, the extensor coccygis. M., Sacrolumbar Ac- 

 cessory. See Musculus accessorius ad sacrolumbalem 

 in Table (lllus. Diet.). M. sacrospinalis, the 

 erector spinse. M., Santorini's Circular, involuntary 

 muscular fibers encircling the urethra beneath the con- 

 strictor urethrae. M. scalenus lateralis, an anomalous 

 muscle originating in the dorsal tubercles of the trans- 

 verse processes of the fourth, fifth, and sixth cervical 

 vertebras, and having its point of insertion with the scale- 

 nus medius. M. scalenus lumborum, the quadrate 

 lumbar muscle. M., Scapulohumeral, the teres major. 

 M., Scapuloradial, the biceps. M. semispinalis 

 capitis. See Complexus in Table (lllus. Diet. ). M.s, 

 Serrated, broad muscles with serrate edges by means 

 of which they are inserted. M. serratus anticus, 

 M. s. a. major, the serratus magnus. M. serratus 

 anticus minor, the pectoralis minor. M.s, Simple, 

 those having a single point of origin and one of inser- 

 tion. M., Skew, an oblique muscle. M., Smiling. 

 See Risorius in Table (lllus. Diet.). M. sphincter 

 antri pylorici, a band of circular fibers distant from 

 the pyloric orifice of the stomach about iocm.; also 

 called the transverse band. M. sphincter pupillae, 

 involuntary fibers of the iris arranged circularly around 

 the pupil and having a width of about 0.08 cm. M. 

 sphincter pyloricus, the aggregation of the fibers of 

 the circular coat at the pyloric orifice of the stomach. 

 Syn., Pyloric muscle. M. sphincter vesicae, the 

 aggregation of the fibers of the circular layer of the 

 muscular coat, about the neck of the bladder and the 

 beginning of the urethra. M. spinalis. Same as 



Spinalis dorsi. M., Square. See Quadratus lum- 

 borum in Table (lllus. Diet). M., Sternocostal, 

 M. sternocostalis. See Triangularis sterni in 

 Table (lllus. Diet.). M., Sternohumeral. See 

 Pectoralis major in Table ( lllus. DicJ. ). M., 

 Sternomastoid. See Sternocleidomastoid in Table 

 (lllus. Diet.). M. subcutaneus colli, M. subcu- 

 taneus cervicis. See Platysma myoides in Table 

 (lllus. Diet. ). M. suboccipitalis. See Transversui 

 nucha in Table (lllus. Diet.). M., Subvertebral. 

 See M.s, Hyposkeletal. M. supraacromio humeralis, 

 the deltoid muscle. M., Supraauricular, the attol- 

 lens aurem. M., Supraoblique, M., Superior Ob- 

 lique. See Obliquus capitis superioris (lllus. Diet.). 

 M. suprascapularis. See Supraspinatus in Table 

 (lllus. Diet.). M. suprasemiorbicularis. See 

 Orbicularis oris in Table Tllus. Diet.). M. supra- 

 serratus, the serratus posticus superioris. M., Sural 

 Triceps. See M., Triceps Sural. M. tarsoprae- 

 phalangeus, in veterinary anatomy a small muscle 

 originating in the tendons of the extensors and attached 

 to the lower end of the oscalcis. M., Tensor Fas- 

 cial, M. tensor fasciae latae. See Tensor vagina 

 femoris in Table (lllus. Diet.). M.s, Thenar, the 

 abductor and flexor muscles of the thumb. M., 

 Thiernesse's, in veterinary anatomy a head of the 

 epicondylopraephalangeus taking origin from the trans- 

 verse ligament of the ulna and considered as a distinct 

 muscle. M. thyreoadenoideus, Winslow's name 

 for a fascicle of the inferior constrictor of the pharynx 

 having its point of insertion on the side of the thyroid 

 gland. Syn., Adenoid muscle. M. thyreopalatinus. 

 See Palatopharyngeus in Table (lllus. Diet.). M.- 

 tonus, the condition of slight but continued contraction 

 in a muscle which causes the tension peculiar to 

 waking hours. M. trachelocostalis, in the lower 

 mammals the analog of the sacrolumbar muscle in man. 

 M. trachelooccipitalis, in veterinary anatomy a 

 muscle which flexes the head, corresponding to the 

 rectus capitis anticus major of man. It takes origin 

 from the transverse processes of the third, fourth, and 

 fifth cervical vertebras, and is attached to the body of 

 the sphenoid and the basilar process of the occipital 

 bone. M. transversus nasi. See Compressor 

 narium in Table (lllus. Diet.). M., Treitz's (Wen- 

 zel, 1819-1S72), the suspensory muscleof the duodenum; 

 a thin, triangular muscle that arises from the left cms 

 of the diaphragm and the connective tissue surround- 

 ing the celiac axis, and is inserted into the duodeno- 

 jejunal flexure. M.s, Triangular, the scalenus 

 muscles. M., Triceps Sural, M. triceps surae, the 

 gastrocnemius and soleus considered as one muscle. 

 M.s, Tricipital, muscles having three distinct origins. 

 M., Trochlear, M. trochlearis, the superior oblique 

 muscle of the eye. M. ulnaris externus, the exten- 

 sor carpi ulnaris. M.s of the Ureters, Musculi 

 ureterum, a bundle of thin fibers from the urinary 

 bladder running between the openings of the ureters. 

 M., Urethrobulbar, the accelerator minx. M. Var- 

 olii. See Stapedius in Table (lllus. Diet.). M. 

 vastus longus, in comparative anatomy the analog of 

 the biceps femoris and a portion of the glutaus niaxi- 

 mus of man. M., Vestigial, one that is rudimentary 

 in man but well developed in the lower animals. 

 M., Zaglas' Perpendicular External, the vertical 

 fibers of the tongue, which, decussating with the trans- 

 verse fibers and the insertions of the geniohyoglossus, 

 curve outward in each half of the tongue. 



Muscology (mus-hol'-o-je) [muscus, moss; /«;<>'/, 

 science]. See Bryology (lllus. Diet.). 



Musculamin (ntus-ku-la'-min). A nitrogenous base 

 obtained from muscular tissue by Etard and Vila, 1902. 



