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The spleen is innervated by the splenic plexus, which connects a branch of the celiac ganglia to the vagus nerve. The underlying central nervous processes coordinating the spleen's function seem to be embedded into the hypothalamic-pituitary-adrenal-axis, and the brainstem, especially the subfornical organ. [17]
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.
Hemal nodes appear similar to lymph nodes in the structure of its lymphoid follicles and to the spleen in the structure in its lymphoid cords. [4] It is presumed to have the same function as the spleen .
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.
The spleen is the largest lymphoid organ in the body but has other functions. [23] It breaks down both red and white blood cells that are spent. This is why it is sometimes known as the 'graveyard of red blood cells'. [23] A product of this digestion is the pigment bilirubin, which is sent to the liver and secreted in the bile.
Two or more organs working together in the execution of a specific body function form an organ system, also called a biological system or body system. An organ's tissues can be broadly categorized as parenchyma, the functional tissue, and stroma, the structural tissue with supportive, connective, or ancillary functions.
Scientists think genetically-modified animals could one day be the solution to an organ supply shortage that causes thousands of people in the U.S. to die every year waiting for a transplant ...
Various bird organs function to differentiate avian immune cells: the thymus, Bursa of Fabricius and bone marrow are primary avian lymphoid organs whereas the spleen, mucosal associated lymphoid tissues (MALT), germinal centers, and diffuse lymphoid tissues are secondary lymphoid organs. As a general rule, birds do not have lymph nodes.