What are some cool facts about the urinary/excretory system?
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when your red blood cells die, they are pooed out of the body. this is what makes your poo brown!
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the excretory organs of earthworm
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The two kidneys of humans are located behind the abdomen.  The kidneys regulate how much water, sodium, potassium, calcium, and phosphate are in the blood.  The kidneys also remove waste products from the body such as uric acid.  Each kidney is filled with capillaries wrapped around very tiny nephrons which filter the blood.
101500
urine contains urea, which is a nitrous acid that is digested out of the bloodstream. when the urea mixes with the toilet water, it foams.
5153
It's actually the Loop of Henle. It's a long, U-shaped portion of the tubule that conducts urine within each nephron in the kidneys of reptiles, birds and mammals. It's principal function is the recovery of water and sodium chloride from the urine.
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If you mean what I think you mean, then the answer is yes.  Experts are still arguing about what they release.  Some think it's just urine, but other studies have found that there's very little urine.  Personally, I think it's just an excess of lubricant.
742035
excretory-filters the blood of toxic nitrogenous wastes from amino acid digestion, specifically urea, ammonia and uric acid in verbebrates. Kidney primarily does this job. It also maintains electrolyte and water homeostasis\n\nnervous- transmission of motor, sensory and integrative nerve impulses and action ptotentials throughout the body via brain, spinal cord and nerves to assist in homeostasis of many systems\n\nendocrin- production and secretion of hormones to be sent thru the blood to all cells of the body; works with the nervous system to maintain many forms of homeostasis\n\ndigestive- ingestion, mechanical and chemical digestion and absorption of nutirents (proteins, fats, carbs converted to amino acids, glucose, fatty acids) so that cells can utilize the smaller molecules for human metabolism, growth and misc homeostatic mechanism; digestive system will then eliminate any non-digested, non-absorbable wastes.
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urine contains urea and ammonium ions which are poisonous, but only if you drank loads of it. poo is fine. eat all the poo you like, gorillas do...
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Urination, fecal excretion, sweating, and exhaling.
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In the anatomy of mammals, the urinary bladder is the organ that collects urine excreted by the kidneys prior to disposal by urination. Urine enters the bladder via the ureters and exits via the urethra.\n---------\nAnatomy\nThe urinary bladder is a hollow, muscular and distensible organ that sits on the pelvic floor (superior to the prostate in males). On its anterior border lies the pubic symphysis and, on its posterior border, the vagina (in females) and rectum (in males). The urinary bladder is normally capable of storing 1.1-1.3 liters of urine, but because it is made up of transitional epithelium it is able to stretch to volumes of even several litres.\n\nThe ureters enter the bladder diagonally from its dorsolateral floor in an area called the trigone. The trigone is a triangular shaped area on the postero-inferior wall of the bladder. The urethra exits at the lowest point of the triangle of the trigone\n--------------\nDetrusor muscle\nThe detrusor muscle is a layer of the urinary bladder wall, made up of smooth muscle fibers arranged in inner and outer longitudinal layers and a middle circular layer. Contraction of the detrusor muscle causes the bladdar to expel urine through the urethra. Problems with this muscle can lead to incontinence.
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Water loss, mainly by evaporation, is a major problem for all land plants and animals. There are many ways to solve the problem; for us it is to drink as much as we lose from urination, in sweat (evaporation) and when we exhale.\nDehydration is a major danger because all the chemical reactions within your cells take place in solution and of course it is the transport medium too (blood in animals).\n\n**ADDITIONAL**\nWater does not flush out 'toxins' (whatever they are!) - this is a myth. Our liver is designed to deal with chemicals that should not be in our body (alcohol, drugs, antibiotics, etc.) and the breakdown products are removed by the kidneys, along with urea from protein metabolism, and excreted with excess water.\nAs far as I know, water has no effect upon the quality of skin - I think this is another myth.\nIt is also a myth is that muscles will store water (this myth has circulated in bodybuilding circles).
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The pH of the body fluids has to be carefully regulated in the range 7.35 to 7.45, since deviations outside this range affects normal functioning of cells and body systems. One of the ways the kidneys have of excreting excess acid in the body fluids is to excrete ammonia (or rather, the ammonium ion: NH4+) in the urine. Exposed to air, the ammonium ions in urine change back to ammonia and produce the distinctive smell. The source of the excess acid could be from the diet, for example - acidic foods such as citrus fruits, vinegar and so on, or as a result of heavy exercise. This may be enough to produce transient rises in ammonium content of the urine.\n\nAnother component of urine which can result in the release of ammonia is urea, particularly if the urine is left standing for a while. Urea is produced during protein metabolism. The building blocks of proteins are amino acids, and these contain carbon, hydrogen, oxygen and nitrogen. When proteins are broken down by cells throughout the body by a process called deamination, ammonia is formed as a waste product and released into the blood.  The liver converts this ammonia to urea which is then excreted by the kidneys. The amount excreted will therefore depend on the amount of protein consumed and the rate of protein breakdown in the tissues. On standing a specimen of urine will be exposed to oxygen in the atmosphere. The presence of oxygen converts the urea in the specimen back into ammonia. Hence, a specimen of urine can give off an ammoniacal smell if allowed to stand for any length of time.\n\nIf the ammonia smell becomes noticeable over longer periods, and particularly if it is accompanied by illness, then it is important to seek a medical opinion. An infection of the urinary tract can produce urine with a strong ammoniacal smell as many of the pathogens (commonly gram-negative bacilli found in the gastrointestinal tract) are urea-splitting organisms. A vaccine against persistent bladder and urinary tract infections is due to go on trial at the end of this year (Coghlan, 1999). The vaccine targets Escherichia coli, the bacterium responsible for 85 per cent of all urinary tract and bladder infections. Other clinical problems such as diarrhoea and respiratory problems can also increase the smell of ammonia. A metabolic disturbance such as diabetic ketoacidosis will lead to an increase production of ammonia as protein is utilised for heat and energy (gluconeogenesis).
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it's good to urinate more, especially if you drink a lot of water or tea and you're unrine comes out a pale yellow or almost clear.  it helps clean out toxins in your body and flush excess fats.
539897
well,ureteric is anything that related to the URETER e.g ureteric orifice,here is some information:\n*the ureters are the ducts that carry urine from the kidneys to the urinary bladder,the ureters are muscular tubes that can propel urine along by the motions of peristalsis,in the adult,the ureters are usually 25 to 35cm long,in humans,the ureters enter the bladder posteriorly, running within the wall of the bladder for a few centimetres,there are no valves in the ureters,backflow being prevented by pressure from the filling of the bladder,as well as the tone of the muscle in the bladder wall.
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The  urinary meatus  is the external urethral orifice.  In  the  male,  the  urethra  is  common  to  the urinary  and  reproductive  systems;  in  the  female,  it belongs only to the urinary system. Therefore the urinary meatus is the opening of the urethra on the body surface through which urine is discharged in females which is the same as the external urethral orifice
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urine, feces, sweat, carbon dioxide.  The first three are mixtures of various waste materials and can vary from time to time depending on diet, activity, and health.
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http://en.wikipedia.org/wiki/Circulatory_system