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Wastes produced by life activities (metabolism) are called metabolic wastes. Carbon dioxide, water, urea, and mineral salts are metabolic wastes. Carbon dioxide is a gaseous waste formed during aerobic respiration. Water is produced by aerobic respiration and other cellular activities. Excretion A. EXCRETION. Cellular activities, such as respiration, produce wastes. Some of these wastes are harmful to the body and must be removed. An upset in the balance of body chemicals can lead to serious health problems or death. The blood capillaries of the alveoli in the lungs. Carbon dioxide diffuses from the erythrocytes (red blood cells), through the capillary walls, into the alveoli, and is exhal … ed through the mouth and nose. 2 people found this useful. Small air sacs (alveoli) in the lungs remove the … carbon dioxide from the blood and release it into the lungs where it is exhaled. Read more: http://wiki.answers.com/Q/How_does_the_respiratory_system_excrete_carbon_dioxide#ixzz1EPo49jb1. + 16 others Blood containing carbon dioxide flows from veins throughout the body to the heart, and then the heart pumps it to the lungs. Small air sacs (alveoli) in the lungs remove the … carbon dioxide from the blood and release it into the lungs where it is exhaled. Read more: http://wiki.answers .... When you breath in oxygen, that oxygen undergoes a process called cellular respiration in order to provide energy for your cells. I won't go into detail with the entire proces … s, but basically a sugar (C6H12O6) combined with oxygen (6O2) to create carbon dioxide (6CO2) and water (6H2O). The excretory system is a system of organs that removes waste products from the body. When cells in the body break down proteins (large molecules that are essential to the structure and functioning of all living cells), they produce wastes such as urea (a chemical compound of carbon, hydrogen, nitrogen, and oxygen). Urea: Chemical compound of carbon, hydrogen, nitrogen, and oxygen produced as waste by cells that break down protein. Ureter: Tube that carries urine from a kidney to the urinary bladder. Urethra: Duct leading from the urinary bladder to outside the body through which urine is eliminated. Mammalian excretion [change | change source]. In mammals, excretion is the formation of urine in the kidneys, and expelling carbon dioxide from the lungs. These waste products are eliminated by urination and breathing out respectively. If excretion does not occur in an organism, waste products accumulate, which eventually kill the organism.  Excretion. Excretion cleans up after respiration. Respiration is a chemical reaction that takes glucose (sugar) and oxygen to produce energy. But it also produces water and carbon dioxide as bi-products. Excretion gets rid of carbon dioxide, water, and other, possibly harmful, substances from your body. Your lungs excrete carbon dioxide as you breathe out, your kidneys filter out nasties to produce urine, removing nitrogen waste from your body, and your skin sheds excess salt through sweat. All vertebrate animals produce nitrogen waste in one form or another. Carbonic acid is also an archaic name for carbon dioxide. Carbonic acid is a chemical compound with the chemical formula H 2 CO 3 (equivalently OC(OH) 2). It is also a name sometimes given to solutions of carbon dioxide in water (carbonated water), because such solutions contain small amounts of H 2 CO 3. In physiology, carbonic acid is described as volatile acid or respiratory acid, because it is the only acid excreted as a gas by the lungs.  * are responsible for the excretion of carbon dioxide and water (waste products of cellular respiration) * these are removed as gases during the process of exhalation. B) Liver. * recycles worn out red blood cells * produces urea (a semi-toxic nitrogenous waste) from the breakdown of amino acids (contains nitrogen). * water (98%), salts, and a small amount of urea diffuse from the blood into sweat glands * excreted through the process of perspiration (sweating!) * main job of sweating is to maintain body temperature (cool down). * site of most urea excretion * controls the concentration of most of the body fluids. The blood capillaries of the alveoli in the lungs. Carbon dioxide diffuses from the erythrocytes (red blood cells), through the capillary walls, into the alveoli, and is exhal … ed through the mouth and nose. When you breath in oxygen, that oxygen undergoes a process called cellular respiration in order to provide energy for your cells. I won't go into detail with the entire proces … s, but basically a sugar (C6H12O6) combined with oxygen (6O2) to create carbon dioxide (6CO2) and water (6H2O). In some animals the products of metabolism and salts are deposited in accumulatory organs or integumentary tissues, which are discarded during molting. Excretion of carbon dioxide and other volatile substances occurs through the lungs or gills. Water, salts, and products of nitrogen metabolism (ammonia, urea, and uric acid) are mainly excreted by the kidneys. 
http://www.mrschutz.com/livingEnv/excretionnotes.htm http://www.answers.com/Q/How_does_the_respiratory_system_excrete_carbon_dioxide http://www.answers.com/Q/Carbon_dioxide_and_water_are_excreted_here_during_exhalation http://www.scienceclarified.com/El-Ex/Excretory-System.html https://simple.wikipedia.org/wiki/Excretion http://www.oum.ox.ac.uk/thezone/animals/life/excrete.htm https://en.wikipedia.org/wiki/Carbonic_acid http://www.goldiesroom.org/Note%20Packets/13%20Human%20Other/00%20Human%20Other%20Systems--WHOLE.htm http://www.answers.com/Q/Carbon_dioxide_and_water_are_excreted_here_during_exhalation http://encyclopedia2.thefreedictionary.com/excretion
is carbon dioxide excreted