25 The Urinary System: Urinary System Organs * Kidneys are major excretory organs * Urinary bladder is the temporary storage reservoir for urine * Ureters transport urine from the kidneys to the bladder * Urethra transports urine out of the body Kidney Functions * Removal of toxins‚ metabolic wastes‚ and excess ions from the blood * Regulation of blood volume‚ chemical composition‚ and pH Kidney Functions * Gluconeogenesis during prolonged fasting * Endocrine functions * Renin: regulation
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ionic concentrations‚ and osmolality. Three treatment groups were utilized: a Gatorade group‚ salt-loaded (access to 0.9 g/l00 ml NaCl) group‚ and a group who only had water. In this experiment the class was able to observe and analyze the changes in urine production as a means of determining the amount of salt the body gets on a day-to-day basis. Introduction: The kidneys are important regulators of homeostasis in the body. They regulate ions and pH as well as water. In addition‚
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Title: Homeostasis Date: 19th January 2010 Aim: To observe‚ draw and label the parts of a nephron. Apparatus: Slide of the transverse section of a kidney Pencil Paper Microscope Method: The slide of the transverse section of a kidney was mounted on the microscope and observed under high power. Drawings of the parts of the nephron were made. Calculations of Magnification: Loop of Henle One Ocular Division = 0.22 µm Size of Specimen = 2 ocular divisions Conversion of Ocular
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transferred between body and environment‚ carbon dioxide is a waste product of respiration and has to be transported by the bloodstream to the lungs where it is breathed out‚ waste and waste products are filtered out of the blood and excreted in the urine. An incubator has a temperature sensor‚ a thermostat with a switch and a heater. Negative feedback happens when one factor drops and another factor increases until they are in balance‚ for example is when the temperature drops‚ the heater turns on
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causing dehydration. * Drinks lots of saltwater‚ secrete ions through gills and excrete urine concentrated with ions. Freshwater Fish * Most have a mesonephric kidney * Body fluid h higher ion concentrations * Water tends to enter the fish causing excess hydration. * Ions move out of fish * Do not drink much water‚ absorb ions through gills and excrete large amounts of dilute urine. Amphibians * Similar kidney to freshwater fish * Take up ions and water in what
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kidneys play a role in the control of fluid balance. For this assignment I will be discussing the gross anatomy of the renal system and the kidney. Renal System The renal system is a group of organs that work together to produce‚ store‚ and release urine. It consists of 2 kidneys‚ ureters‚ the urinary bladder‚ urethra and renal vessels which include the renal artery and the renal vein. The main blood supply comes from the renal artery which passes from the abdominal aorta into the kidneys. Each artery
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amount of glucose is retained in the filtrate and a large amount of it cannot be reabsorbed and is excreted out as urine. The large amount of glucose within the filtrate changes the osmotic pressure within the nephron‚ which reduces the amount of water that is reabsorbed back into the bloodstream. The sample with diabetes mellitus should hypothetically result in the sample of urine turning orange after 10 drops of Benedict’s Solution was added and the sample was heated. The sample turning orange
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I. Kidney Anatomy A. Every day the kidneys filter nearly 200 liters of fluid from the bloodstream‚ allowing toxins‚ metabolic wastes‚ and excess ions to leave the body in urine while returning needed substances to the blood; of this‚ only 1-2 L of urine is actually formed daily B. Location and External Anatomy 1. Kidneys - bean-shaped organs that lie retroperitoneal in the superior lumbar region. 2. The medial surface is concave and has a renal
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(Greek nephros=kidney) are renal or kidney tubules. Each kidney has over one million nephrons that are responsible for removing waste products from blood and maintaining water‚ salt and pH balance in the body. This vital job results in the formation of urine. 1.Afferent Arteriole * receives blood rich in oxygen from the renal artery. * blood is transported to the glomerulus of the nephron where it is pressure filtered. 2.Glomerulus * The glomerulus is a knotted up capillary that contains
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edu/~cmallery/150/physiol/c45x10glu-homeostasis.jpg) In the homeostatic system many organs have specific roles. The kidney as several roles as a homeostatic organ‚ one of the roles is the regulation of blood PH ‘the kidney excrete a variable amount of hydrogen ions into the urine and conserve bicarbonate ions’ (Principles of human anatomy) as these two activities help regulate the blood PH level. The urogenital system ‘is a combination of two systems of the body: the reproductive system and the urinary system’ (http://www
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