File:The anatomy of the horse - a dissection guide (1922) (18008732469).jpg

Title: The anatomy of the horse : a dissection guide
Identifier: anatomyofhorsedi00mcfa (find matches)
Year: 1922 (1920s)
Authors: McFadyean, John, Sir, 1853-1941
Subjects: Horses; Horses -- Anatomy
Publisher: Edinburgh : Johnston
Contributing Library: Webster Family Library of Veterinary Medicine
Digitizing Sponsor: Tufts University

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Text Appearing Before Image:
DISSECTION OF THE PELVIS. 365 2. The Stroma is composed of fibrous connective tissue with some bundles of non-striped muscular tissue. Some coarser strands start from the bottom of the ovulation fossa, and diverge radially towards the periphery of the organ. In the softer greyish parenchyma between these strands the Graafian follicles are situated, the smaller ones being found towards the centre of the organ, and the larger near the surface. A layer of condensed stroma without any Graafian follicles lies beneath the surface epithelium, and is sometimes termed the tunica albuginea of the ovary.
Text Appearing After Image:
Fig. 51. Section of Cat's Ovary, magnified (from Schron). 1. Outer covering of the ovary ; 2. Fibrous stroma ; 3. Superficial layer of fibro-nuclear substance; 3'. Deeper parts of the same ; 4. Blood-vessels; 5. Ovi-sacs forming a layer near the surface; 6. One or two of the ovi-sacs sinking deeper and beginning to enlarge ; 7. One of the ovi-sacs farther developed, now enclosed by a prolongation of the fibrous stroma, and consisting of a small Graafian follicle, within which is situated the ovum covered by the cells of the discus proligerus ; 8. A follicle farther advanced ; 8'. Another which is irregularly compressed ; 9. The greater part of the largest follicle, in which the following parts are seen ; a. Cells of the tunica granulosa lining the follicle ; b. The reflected portion named discus proligerus ; c. Vitellus or yelk part of the ovum, surrounded by the zona pellucida ; d. Germinal vessicle ; e. Germinal spot. _ -These are vesicular bodies for A large-sized follicle possesses 3. The Graafian Follicles, or Ovi-sacs.- the maturation and extrusion of the ova. the following parts :— a. The wall of the follicle, composed of an inner delicate tunica 2)ropria, and an outer layer—the tunica fibrosa—derived from the surrounding stroma. b. The Membrana Granulosa.—This forms an epithelial lining to the wall of the follicle, and consists of several layers of cells. At one point

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