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Full-body hemihypertrophy. Hemihypertrophy, now more commonly referred to as hemihyperplasia in the medical literature, is a condition in which one side of the body or a part of one side of the body is larger than the other to an extent considered greater than the normal variation.
The typical mammalian kidney consists of a renal capsule, a peripheral cortex, an internal medulla, one or more renal calyces, and a renal pelvis. [7] Although the calyces or renal pelvis may be absent in some species. [7] The medulla is made up of one or more renal pyramids, [8] forming papillae with their innermost parts. [9]
The asymmetry within the abdominal cavity, caused by the position of the liver, typically results in the right kidney being slightly lower and smaller than the left, and being placed slightly more to the middle than the left kidney. [10] [11] [12] The left kidney is approximately at the vertebral level T12 to L3, [13] and the right is slightly ...
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For instance, if one kidney is surgically removed, the cells of the other kidney divide at an increased rate. [1] Eventually, the remaining kidney can grow until its mass approaches the combined mass of two kidneys. [1] Along with the kidneys, compensatory growth has also been characterized in a number of other tissues and organs including:
The renal crest usually appears in animals larger than rabbits. [68] The kidneys of bovines are multilobar with external lobation. [72] Marine mammals, bears and otters have reniculate kidneys which are made of large amount of lobes called reniculi. [73] Each renculus can be compared to a simple unipapillary kidney as a whole. [74]
Supernumerary bones – these additional bones are fairly common, particularly in the feet, and are frequently mistaken for fractures on x-rays. Supernumerary kidney – a third kidney [6] Supernumerary musculature – presence of extra muscles such as additional heads of the biceps brachii, or coracobrachialis muscle variants [7]
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