The organs in the excretory system

By Joseph M. and Vikram M.

Large Intestine

The function of this massive organ is to process food particles and move the undigestible parts in the food. This organ helps move the waste from the small intestine that processes waste into liquid wastes and solid wastes. This organ is like a trash can the garbage goes in to be dumped out.

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Small Intestine

Once the waste is partly filtered, it is sent to this organ, the small intestine to filter the waste liquids and solids. Bile is secreted through the small intestine and help break down the waste even more. Once the waste is filtered it is sent to the large intestine that helps transfer the waste to the respected organs for liquid and solid waste.
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Liver

The liver is an organ that breaks down toxins, chemicals, and poisons. These toxins are then converted to urea that will be released in the process of urination. But before it can go through this process it needs to convert the urea into urine. This is exactly what the Kidney does. The kidney filters the urea into urine to be released in the process of urination.

The liver also produces a substance known as bile. Bile is used to breakdown fats into usable nutrients and waste. Once the bile is produced it is stored in the gall bladder until it can be used again. Bile is secreted in the small intestine to break down substances like fats, and ethanol into harmless substances that can be released as waste.

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Kidneys

These are bean shaped organs that are present on both sides of the human body. Each kidney gets its supply of blood from from the renal artery in the kidney. The kidneys remove the nitrogenous waste like urea from the blood, salt, and excess water. These liquid waste products are released in the form of urine. This is done by the millions of nephrons present in the common kidney. A nephron is the basic unit of a kidney. These nephrons main purpose is to regulate the concentrations of water, soluble substances, and filtering the blood. The filtered blood is the carried from the kidneys by the renal vein. The urine goes to the the ureter which then carries it to the urinary bladder. The urine then stays in the urinary bladder until urination. In urination the urine is released through the urethra.
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Skin

Why do we sweat? Sweat is the excretion from the skin. Sweat is excreted from the sweat glands in the skin to help keep the body cool when it's warm. The body tries to maintain homeostasis and keep the body balanced by releasing liquids from the body. By releasing liquids it cools your body down if you are overheating.

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Lungs

Your lungs help release carbon dioxide when you exhale. It also help releases gaseous waste from your blood stream through respiration.
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Ureter

This organ is like a bike messenger. This organ is comprised of muscular ducts that send urine from the kidneys to the urinary bladder. It send it a certain able where gravity does most of the work. To prevent the back flow of urine this organ has uterovesicle valves. These valves open to let waste in but don't open to let waste out.
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Urinary Bladder

This the organ that acts like a water bottle. This organ holds the urine after it has been filtered by the kidneys. It is a hollow organ that allows urine to pass through. It allow the process of urination to be voluntary and infrequent. During urination the muscles in the bladder contract releasing urine through the uretra.
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Uretra

This organ is a tube that connects from the urinary bladder to outside of the body. This is what the urine in your body goes through so it can be released. The uretra is very different for both males and females, but still performs the same function