Mammalian Kidney Investigation Essay examples

1596 Words Jun 23rd, 2011 7 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.
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The colour of the pelvic was light pink. This change in colour of the different layers of the kidney could indicate that there is perhaps a difference in the distribution of blood vessels in each layer, with the medulla containing the most blood vessels as it is the deepest shade of red, then the cortex and then the pelvis containing the least.
The functions of the kidney, excretion and osmoregulation require a sufficient amount of blood vessels. For example, as excretion is the process by which waste products and other non- useful materials are eliminated from an organism; the blood vessels assist with the transport of waste to the kidney to be excreted. Also, as osmoregulation is active regulation of the osmotic pressure to maintain the homeostasis of the organism’s water content, absorption of water from the blood vessels can is controlled or maintained depending on the water balance. Therefore, it can concluded that the abundance of blood vessels in the kidney assist the kidney to carry out the kidney’s function of excretion and osmoregulation efficiently.
The longitudinal section of the cortex of the kidney, which was microscopically observed, was drawn in diagram 3. According to diagram 3, many circular structures that are most likely the glomerulus, which are a tangled cluster of blood capillaries. The glomerulus is surrounded by thin, sac- like structure called the Bowman’s capsule. The Bowman's

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