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∙ 13y agoThe kidneys are bean-shaped organs, each about the size of a fist. They are located near the middle of the back, just below the rib cage, one on each side of the spine. The kidneys are sophisticated reprocessing machines. Every day, a person's kidneys process about 200 quarts of blood to sift out about 2 quarts of waste products and extra water. The wastes and extra water become urine, which flows to the bladder through tubes called ureters. The bladder stores urine until releasing it through urination.
Wastes in the blood come from the normal breakdown of active tissues, such as muscles, and from food. The body uses food for energy and self-repairs. After the body has taken what it needs from food, wastes are sent to the blood. If the kidneys did not remove them, these wastes would build up in the blood and damage the body.
The actual removal of wastes occurs in tiny units inside the kidneys called nephrons. Each kidney has about a million nephrons. In the nephron, a glomerulus-which is a tiny blood vessel, or capillary-intertwines with a tiny urine-collecting tube called a tubule. The glomerulus acts as a filtering unit, or sieve, and keeps normal proteins and cells in the bloodstream, allowing extra fluid and wastes to pass through. A complicated chemical exchange takes place, as waste materials and water leave the blood and enter the urinary system
At first, the tubules receive a combination of waste materials and chemicals the body can still use. The kidneys measure out chemicals like sodium, phosphorus, and potassium and release them back to the blood to return to the body. In this way, the kidneys regulate the body's level of these substances. The right balance is necessary for life.
In addition to removing wastes, the kidneys release three important hormones:
- erythropoietin, or EPO, which stimulates the bone marrow to make red blood cells
- renin, which regulates blood pressure
- calcitriol, the active form of vitamin D, which helps maintain calcium for bones and for normal chemical balance in the body
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∙ 11y agosalt, sugar, water, and waste products
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What are the four substances in the blood filtered by the kidneys?
1. Water 2. Salts 3. Glucose 4. Urea 5. Amino acid 6. Some vitamins
What are four different substances that can diffuse in and out of your blood?
Oxygen, carbon dioxide, carbon monoxide, and glucose are just four substances that can diffuse into and out of your blood. There are many more.
What are the four major organs through which the blood passes?
Lungs, Heart, liver & kidneys.
What the names of the four things found in blood?
plasma red blood cells white blood cells platelets
What structure is filtering the blood?
The kidneys are responsible for filtering waste (especially urea) from the blood and excrete them and water in urine. The kidneys make up a filter system for the blood, reabsorbing almost 99%% of the fluid into the blood, and sending only two to four pints of waste (urine) into the bladder for storage until it can be disposed of. The kidneys allow the blood to keep glucose, salts and minerals after cleansing it of poisonous materials which will be passed out in the urinary tract.
Are there only four different types of blood?
Yes, there are only four official types of blood from which there are 30 substances and over 600 different blood-group antigens have been found across the varies ethnic groups.
How many kidneys do rats have?
Four
What could be found in blood that would make the military test your blood every four hours?
Most likely illegal substances such as opiates, steroids, amphetamines etc.
What are the four main physiological processes that contribute to urine formation?
Filtration of blood, re-absorption, secretion of substances, concentration of urine
How does a twenty four hour medication stay in your system without being flushed out?
Medication in your blood stream is flushed out through your kidneys or by your liver into your digestive tract. Your kidneys usually do not remove large compounds from your blood stream, but small ones. By having the active particle in the medicine larger than the particles the kidneys remove from the blood stream, the kidneys will not flush out the medicine. Sometimes this is done by pegylating the medicine particle. That simply adds a propylene glycol particle to the medicine particle. When the medicine gets to where it is needed, the peg drops off. Eventually the pegs drop off and the medicine is either used or eliminated.
What are the four organs in the urinary system?
The four primary urinary organs are known as the kidneys, ureters, bladder, and the urethra. These all work together to help the excretory system produce and flush urine. Their key function is to help filter and cleanse the blood of foreign or unwanted materials.
What does quadrinephric mean?
Quadrinephric means having four kidneys.
