Nephron * Basic structural and functional unit of kidney * Regulate concentration of water and soluble substances * FUNCTION: Eliminates waste‚ regulates blood pressure‚ regulates blood PH‚ controls levels of electrolytes and metabolites A. Urine Formation FILTRATION - plasma filtered from glomerulus into Bowman’s capsule * Blood pressure forces filtrate through filtration slits between podocytes of Bowman’s capsules. * Approx 20% of blood plasma is non-selective filtered
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your body. The urinary system is very important because it perform the essential function of getting rid of these metabolic wastes. Main Structures of the Urinary System The main structures that make up the urinary system are two kidneys (contains nephrons)‚ two ureters‚ one bladder‚ one urethra‚ arteries and veins. The Ureter connects the kidney to the bladder. The bladder is storage for urine. Urine is excreted to the outside of the body through the urethra. Kidney The kidneys are two bean-shaped
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The Roles of the Nephron of the 120 ml of blood that is filtered by the kidneys each minute‚ only I ml (that’s less than I%) turns into urine that will eventually leave the body (after approximately 300 - 400 mis of it accumulates to fill the bladder!) That leaves 119 ml of fluid called filtrate to be returned back to the blood stream. Good thing‚ otherwise you would have to micturate (pee‚ urinate) once every 3 minutes and drink 1 L of fluid every 10 minutes in order to maintain Homeostasis!!! The
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P4 – Explain the role of the kidney in the homeostatic control of fluid balance Homeostasis is how our body works to keep the internal environment constant. The 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
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acid. Osmolarity is controlled by selective reabsorption/secretion. C 5 types of excretory systems: None in porifera‚ cnidaria Protonephridia in planaria & rotifers Metanephridia in annelids Malpighian tubules in terrestrial arthropods Kidneys (with nephrons) in vertebrates Protonephridia Have flame bulbs‚ tubules‚ and nephridopores. C Flame bulbs selectively filter body fluid to nitrogenous waste. C Fluid collects in tubules and drips outside through the nephridopore. Metanephridia are found
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contains pores. The small openings connect with the metanephridia which are the primitive kidneys of the earthworm. Liquid wastes‚ which collect in the body cavity‚ are excreted through these nephridial openings. The Bowman’s Capsule is part of a Nephron‚ which would be found in the Kidney. It’s function is to collect the filtrate from the Glomerulus‚ passing it on to the Proximal Convoluted Tubules (PCT’s); subsequently‚ to the rest of the
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Cruz Exercise 9: Renal System Physiology: Activity 1: The Effect of Arteriole Radius on Glomerular Filtration Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. There are approximately __________ nephrons in a healthy human kidney. You correctly answered: c. 1 × 106 2. Which of the following lists the anatomical structures in the correct order as they are encountered by the blood and filtered fluid during the process of filtration? You correctly
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Abstract: The experiment was done to demonstrate the effect of ADH on the volume and concentration of urine in order to demonstrate the control of ADH over blood plasma osmolarity. Since non-invasive methods were preferred the volume and concentration of urine was used in place of drawing blood. The results that we our anticipating are that ADH levels in the group of subjects that ingested the 6 gm. Of NaCl would increase over time in response to the increased osmolarity of the blood from all
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Renal autoregulation: new perspectives regarding the protective and regulatory roles of the underlying mechanisms Rodger Loutzenhiser‚1 Karen Griffin‚2 Geoffrey Williamson‚3 and Anil Bidani2 1Smooth Muscle Research Group‚ University of Calgary‚ Alberta‚ Canada; 2Department of Internal Medicine‚ Loyola University Medical Center and Edward Hines‚ Jr. Veterans Affairs Hospital‚ Maywood‚ Illinois; and 3Department of Electrical and Computer Engineering‚ Illinois Institute of Technology‚ Chicago
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Excretion and Elimination of Toxicants and their Metabolites The first topic that was covered by this chapter was the excretion of wastes by the Renal system. The first step that occurs in the kidney deals with the nephron‚ which is the functional unit of the kidney. In the glomerulus the formation of urine begins with the passive filtration of plasma through the pores that are found in the glomerulus. The plasma is forced through these pores by hydrostatic pressure. The only things that determines
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