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An easy way to remember the anatomy of the spleen is the 1×3×5×7×9×10×11 rule. The spleen is 1 by 3 by 5 inches (3 by 8 by 13 cm), weighs approximately 7 oz (200 g), and lies between the ninth and eleventh ribs on the left-hand side and along the axis of the tenth rib.
This category is for articles about the Spleen, an organ found in virtually all vertebrate animals with important roles in regard to red blood cells and the immune system. Subcategories This category has only the following subcategory.
The smaller veins unite to form larger veins that do not accompany the arteries, but soon enter the trabecular sheaths of the capsule, and by their junction form six or more branches, which emerge from the splenic hilum, and, uniting, constitute the splenic vein, the largest radicle of the portal vein. References
The trabecular arteries are the name of the branches of the splenic artery after it passes into the trabeculae of the spleen, where it branches.When these arteries then reach the white pulp, and become covered with periarteriolar lymphoid sheaths, the name changes again to central arteries (or central arterioles).
The fibroelastic coat of the spleen invests the organ, and at the hilum is reflected inward upon the vessels in the form of sheaths. From these sheaths, as well as from the inner surface of the fibroelastic coat, numerous small fibrous bands, the trabeculae of the spleen (or splenic trabeculae), emerge from all directions; these uniting, constitute the frame-work of the spleen.
Particularly hazardous is the downward traction of the phrenicocolic ligament (this maneuver may be necessary for the mobilization of splenic flexure). [ citation needed ] This ligament marks the site where the colon exits the peritoneal cavity: the phrenicocolic ligament is thus an important point of intersection of abdominal anatomy and ...
The gonads may pick up some tissue from the spleen, and as they descend through the abdomen during development, they can produce either a continuous or a broken line of deposited splenic tissue. [12] Splenosis is a condition where foci of splenic tissue undergo autotransplantation, most often following physical trauma or splenectomy.
The red pulp of the spleen is composed of connective tissue known also as the cords of Billroth and many splenic sinusoids that are engorged with blood, giving it a red color. [ 1 ] [ 2 ] Its primary function is to filter the blood of antigens , microorganisms, and defective or worn-out red blood cells.