The laws and mechanics of circulation, with the principle involved in animal movement . n through-out. Thus, nervous force to the womb is literally banked uponthe Mood-vessels ; and if this means anything, it means thatcirculation shall be in correspondence with the physiologicalrequirements, or supply equal to demand, the cardinal circum-stance being the growth and elaboration of the embryo, whichis the object and purpose of the organ, the others being sim-ply incidental. It comes to this, namely, that the nervous force for expand-ing and contracting the uterine sinuses should expand and con-
The laws and mechanics of circulation, with the principle involved in animal movement . n through-out. Thus, nervous force to the womb is literally banked uponthe Mood-vessels ; and if this means anything, it means thatcirculation shall be in correspondence with the physiologicalrequirements, or supply equal to demand, the cardinal circum-stance being the growth and elaboration of the embryo, whichis the object and purpose of the organ, the others being sim-ply incidental. It comes to this, namely, that the nervous force for expand-ing and contracting the uterine sinuses should expand and con-tract the uterine blood-vessels at one and the same time, there-by causing afflux and efflux of blood through them for com- 332 PHYSIOLOGICAL ANATOMY pelling correspondence throughout, which the scheme callsfor. Furthermore, this would accord with the action in thevessels in respiration, as indicated by the undulations inarterial tension. But would not this mechanics interfere withthe due circulation of blood in the placental sinuses I Cer-tainly not, and for the following reasons :. Fig. 139.—Showing the Arteries and Veins to the Womb (left side). S, spermatic arteryand veins (ovarian) ; U, uterine artery and vein ; 1, vessels passing between themuscular fibres; 2, peritonaeum ; G, Fallopian tube ; F, ligament of ovary ; i?,round ligament ; H, inferior ligament or duplicature of peritonaeum correspondingwith Douglas cul de sac ; V, vagina. 1. Efflux of blood in the uterine sinuses through the veinsis by means of capillary vessels, which tend to retard escape,while the flow of blood into and out of the placental sinusestakes place through large canals (Fig. 137, c, c), whereby affluxand efflux has corresponding increase. But in addition to this,the expansion in the placenta, which occurs during systole of NERVES TO THE GRAVID WOMB. 333 A, the fundus and body of the uterus, having the peritoneumdi^secred off from left side; B, the vagina covered withnerves proceeding from the
Size: 1398px × 1788px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookde, booksubjectblood, booksubjectrespiration
