580189_Mammalian+Kidney+Dissection_FINAL_Q

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Dec 6, 2023

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Mammalian Kidney Dissection Pre-Laboratory Questions 1. What role do the kidneys play in homeostasis? By controlling the amount and quantity of bodily fluids, the kidneys contribute to homeostasis. 2. List the vessels through which blood passes as it flows through the kidney. The abdominal aorta supplies the kidneys with oxygenated blood via the right and left renal arteries. Both the right and left renal veins empty into the inferior vena cava, removing blood that has lost its oxygen content from the kidneys. 3. What is the basic functional unit of the kidney? What are its primary functions? The kidney's fundamental structural and functional unit is the nephron. The Greek term nephron means kidney.Its job is to control the amount of water and soluble substances in the blood by filtering it, reabsorb the necessary ones, and excrete the excess in urine. Discussion Question ©2015 Carolina Biological Supply Company

Mammalian Kidney Dissection Describe the functions of each of the following parts of the nephron and associated structures in the process of urine production: glomerulus, glomerular capsule, proximal convoluted tubule, peritubular capillaries, descending limb of the nephron loop, ascending limb of the nephron loop, distal convoluted tubule, and collecting duct. The glomerulus screens blood to make a filtrate, and the glomerular capsule separates big particles for ultrafiltration. Active reabsorption takes place in the proximal convoluted tubule (PCT), which gets back ions, water, and nutrients. By reabsorbing water and solutes, the peritubular capillary keeps the osmotic gradient steady. The downward loop of Henle concentrates pee by reabsorbing water, while the ascending loop does the same thing but with ions. Ions that need to be flushed out are released in the distal convoluted tubule (DCT). Finally, the collecting duct takes urine from the nephrons and moves it to the renal pelvis, where it will be pushed out of the body. ©2015 Carolina Biological Supply Company

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