Essay on Mammalian Kidney Investigation

1578 WordsMay 31, 20117 Pages
Mammalian Kidney Investigation Background Information: The kidneys are dark red bean -shaped organs that are a very important pair of organs that perform many functions. The kidneys have a convex side and a concave side. They are each about the size of a fist. The kidneys are located near the middle back of a human, just below the rib cage, one on each side of the spine. One kidney is located below the spleen on the left side of the body, whereas the other kidney is located just below the liver. The kidneys receive blood from the paired renal arteries and the blood is drained into the paired renal veins. In a human body, the kidneys process about 200 quarts of blood to sift out about 2 quarts of waste products and extra water everyday.…show more content…
Variables: Part A Independent Variable The position in which the kidney is longitudinally cut with the scapel. Dependent Variable The structure of the sheep’s kidney observed. Part B Independent Variable The prepared slide and the region of that slide of the kidney used. Dependent Variable The structure that can be observed from the microscope. Part A Controlled Variable Method to control the variable The type of kidney used in this experiment. The kidney examine in this experiment is a kidney of a sheep. Part B Controlled Variable Method to control the variable The type of microscope used in this experiment. Only one binocular microscope will be used in this part of the experiment. Part A Part B Uncontrolled Variable Uncontrolled Variable The health condition of the kidney The condition of the prepared kidney slides. Results: Qualitative data- Analysis of the kidney The size of the sheep’s kidney was around the size of a fist and the ureter was still attached to the concave side of the kidney. Diagram 1 is the exterior of the kidney. The outside of the kidney was dark red in colour. The renal artery carries the blood into the kidney and the renal vein carries the blood away from the kidney. It was evident that at all layers of the kidney, the colours are different. The renal cortex of the kidney, which is labeled in diagram 2(the interior of the kidney), was almost a brownish shade of red whereas the next

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