. Anatomy of the cat. Cats; Mammals. 272 THE VISCER/I. circular course, and the cranial ones are attached to the crura of the penis. The other fibres have no fixed attachment. c. Muscles Peat liar to the Female (Fig. 114).—M. levator vulvae (Strauss-Durckheim), or constrictor cunni (/--).—This is homologous with the levator scroti of the male. It consists of a band of fibres which pass ventrad from the external sphincter ani (rt) and surround the vulva (3), lying immediately beneath the integument. M. constrictor vestibuli, or rectovaginalis (Strauss-Durck- heim) {d).. J iM^i)^j-j;a*;';'Mi'.w;
. Anatomy of the cat. Cats; Mammals. 272 THE VISCER/I. circular course, and the cranial ones are attached to the crura of the penis. The other fibres have no fixed attachment. c. Muscles Peat liar to the Female (Fig. 114).—M. levator vulvae (Strauss-Durckheim), or constrictor cunni (/--).—This is homologous with the levator scroti of the male. It consists of a band of fibres which pass ventrad from the external sphincter ani (rt) and surround the vulva (3), lying immediately beneath the integument. M. constrictor vestibuli, or rectovaginalis (Strauss-Durck- heim) {d).. J iM^i)^j-j;a*;';'Mi'.w;;<H^.'i|j;l'^ ""-'"^'H fici''iii;rai'i?ii Fig. 114.—Muscles of the Anus and Urogenital Organs in the Female. a, M. sphincter ani externus; b, M. levator vulvae; c, M. sjihincter ani internus; d, M. constrictor vestibuli; e, M. ischiocavernosus (cut); f., M. urethralis; g, M. caudoanalis; //, M. caudovaginalis; i, M. transversus perinei; /, M. caudorectalis. I, the tail; 2, anus; 3, vulva; 4, rectum; 5, vagina; 6, neck of the bladder. Origin from the sides of the sphincter ani internus (r). The muscle forms a distinct bundle two or three millimeters wide, which passes ventrocaudad and is inserted into the ventral sur- face of the urogenital sinus, caudad of the insertion of the ischiocavernosus {e). M. caudovaginalis (Strauss-Durckheim) (//).—A slender band just craniad of the caudoanalis (^), and corresponding to the caudocavernosus of the male. Origin from the median line of the ventral surface of the first two caudal vertebrae. The muscle passes caudoventrad, lying between the levator ani and the caudorectal (7), and is inserted into the ventral side of the urogenital sinus, at the base of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Reighard, Jacob Ellsworth, 18
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