The laws and mechanics of circulation, with the principle involved in animal movement (1885) (14595175799)

Identifier: lawsmechanicsofc00trip (find matches)
Title: The laws and mechanics of circulation, with the principle involved in animal movement
Year: 1885 (1880s)
Authors: Triplett, William Harrison, 1836-1890
Subjects: Physiology, Comparative Blood Respiration
Publisher: New York : J. H. Vail
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons



Text Appearing Before Image:
tive-tissue fibres. The several bodies are contained in a separatesheath, com posed of elastic and fibrous tissue similar to theelastic coat in the arteries (Fig. 204, h), dense and thick, andclosely bound together from the intermingling of the fibresalong the sides, while within this outer tunic is a muscularcylinder, the two intimately interblending to form the com-mon wall (h). From the interior of this sheath (tunicaalbuginia) proceed numerous bands and cords (trabecules),which intersect, dividing and subdividing the interior into DUALISM DEMONSTRATED. 489 numerous separate compartments (d, d), lined by laminatedepithelium—a continuation, in short, of the endothelial liningof the veins, with which they freely communicate ; and so freeand intimate is this communication with the veins that theywere at first taken to be mere venous dilatations, but are vascularspaces simply, formed by the trabeculse, into which the endo-thelial lining of the vessels is projected, or similar to what
Text Appearing After Image:
Fig. 204.—Transverse Section through the Spongy Portion of the Urethra (corpusspongiosum urethras).—Klein, a, Epithelium ; 6, tunica mucosa; c, muscularcords ; d, vascular spaces of the corpus cavernosum ; e, glands ; /, excretory ductof gland ; g, longitudinal muscles ; h, tunica albuginia. occurs in the uterine and placental sinuses (Fig. 137, c, c).Finally, we have large arterial capillaries emptying into thesevascular spaces by funnel-shaped openings, for producing rapidafflux of blood in the parts, and embossed by dense nervousplexuses connecting with the nerves and structures in thepenis, on the one hand, and with the hypogastric plexus on theother, by means of which the expansile action in the organ andthe requisite blood-supply for filling and distending the vascu-lar spaces during the sexual orgasm are readily produced; 490 DUALISM DEMONSTRATED. the blood serving to give volume to the organ; otherwise itwould be needle-like ; hence these vascular arrangements This will se