The Excretory System© Copyright NewPath Learning. All Rights Reserved. 94-4950Visit www.newpathlearning.com for Online Learning Resources.Functions of the Excretory SystemThe organs of the excretory system help to keep blood volume, body in balance while also helping to eliminate wastes. Organs of the Excretory SystemThe kidneys and the bladder are the main organs of the excretory system. Our kidneys lie in the back of our abdomen and have a rich urine is formed in the kidneys, it travels down tubes known as ureters to the urinary bladder. Here, urine may be stored until it is released under voluntary control from the body through the tubular urethra. cortexrenal pelvisuretercalyxmedullaaortarenalarteryrenalveinnephronmedullaglomeruluscapillariesloop ofHenlecollectingtubulecortexExcretion by Skin, Lungs & Digestive TractIn addition to the kidneysexcreted by the skin, lungs and digestive tract. The skin may become very dry in cases of dehydration as lungs. Fluid may also be excreted with the feces from the digestive tract, especially in conditions of infection when diarrhea can lead to excessive loss Kidney StructureThe kidney is made up of an outer region known as the cortex and an inner region known as the medulla. The kidney is designed to materials. Therefore it has a very rich supply of blood. kidney, there are over one million mini-nephrons. The nephronsurine.skinfeceslungsintestinessweat glandsweathumidified airFormation of Urine Blood enters the nephron structures within a specialized capillary bed known as the glomerulusother very small particles are forced across the wall of the capillary into the elaborate system of nephron tubules. Nearly 85%nephrons is reabsorbed kidney becomes concentrated into urine. Although 180 liters of reabsorbed1 to 2 liters of urine each day.urethrakidneysureterThe organs of the excretory system help to keep blood volume, body in balance while also helping to eliminate wastes. The kidneys and the bladder are the main organs of the excretory system. Our kidneys lie in the back of our abdomen and have a rich urine is formed in the kidneys, it travels down tubes known as ureters to the urinary bladder. Here, urine may be stored until it is released undddddddddddddddddeeeeeer voluntary control from the body through the tubular urethra. cortexrenal pppppppppppppeeeeeeeeeeellllllllllvvvvvvvvvvvvviiiiiiiisureterccccccccccccaaaaalyxmedullaaaaaaaaaaaaaaortarenalarteryrenalveinnnnnnnnnnnnnneeeeeeeeeeeepppppppppppppppphhhhhhhhhhhronmedullalllllggggggggggggglllllllooooooooommmmmmmmmmerulusgggggggggggggggggggggggggllllllllooooooooollllloooooooooooooooscapillariesssloop ofHenleppcollectingcctubulecortexIn addition to the kidneysexcretedby the skin, lungs and digestive tract. The skinmay become very dry in cases of dehydration as lungs. 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