File:The science and art of midwifery (1891) (14765861112).jpg

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Identifier: scienceamidw00lusk (find matches)
Title: The science and art of midwifery
Year: 1891 (1890s)
Authors: Lusk, William Thompson, 1838-1897
Subjects: Obstetrics
Publisher: New York, D. Appleton and Co.
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: Open Knowledge Commons and Yale University, Cushing/Whitney Medical Library

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ace of the apo-neurosis. The superficial perineal muscles are of slight obstetrical importance.They are the constrictor vaginae, the ischio-cavernosi, and the trans-versi perinaei. The constrictor vaginae consists of two small lateral muscles, situ-ated upon the outer sides of the vestibular bulbs, and surrounding thevulvar orifice. Posteriorly the extremities of the main muscle startfrom the perineal fascia at a point nearly midway between the sphinc-ter ani and the ischia, while a small bundle only is connected with thesphincter ani itself.* Above, the convergent ends separate into asuperficial and deep portion. The superficial portions terminate in atendon which unites them together above the dorsal vein of the clito-* Luschka, Anatomie des raensehlichen Beckcns, p. 399. MECHANISM OF LABOR. 169 ris; the deep portions pass between the upper ends of the bulbs andthe clitoris, and are likewise united by an aponeurosis. The action of the muscle consists chiefly in compressing the veins
Text Appearing After Image:
CLITORIS. URETHRA. CONSTRICTORCUNNI M. TRANSVERSUS if If Iff Fig. 108.—Muscles of the perirueum. (Henle.) crossed by its tendon, and in thus enhancing the turgidity of theerectile apparatus. It is in no sense a sphincter muscle, though, bypressing the turgid bulbs inward, it may narrow the vestibule of thevagina. The ischio-cavernosi muscles form a sort of flbro-muscular sheathabout the crura of the clitoris. They are united together above by anaponeurosis which crosses the posterior extremity of the body of theclitoris. During sexual excitement these muscles are capable not onlyof compressing the crura, thereby forcing the blood toward the bodyof the clitoris, but, through the pressure exerted by the aponeurosisupon the dorsal vein, they help to retard the return of the blood fromthe turgescent organ. The transversi perinaei muscles are small, triangular, flattenedmuscles which pass from the inner sides of the ischia, underneath theconstrictor muscle, to the sides of the vagina and

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  • bookid:scienceamidw00lusk
  • bookyear:1891
  • bookdecade:1890
  • bookcentury:1800
  • bookauthor:Lusk__William_Thompson__1838_1897
  • booksubject:Obstetrics
  • bookpublisher:New_York__D__Appleton_and_Co_
  • bookcontributor:Yale_University__Cushing_Whitney_Medical_Library
  • booksponsor:Open_Knowledge_Commons_and_Yale_University__Cushing_Whitney_Medical_Library
  • bookleafnumber:196
  • bookcollection:medicalheritagelibrary
  • bookcollection:cushingwhitneymedicallibrary
  • bookcollection:americana
Flickr posted date
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28 July 2014

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