How the Kidneys Produce Urine 4

Any substances that don't absorb in the tubule are wastes that the body cannot use. The other waste go into the tubular fluid by the tubular cells of the kidney. Various substances, such as ammonia, urea uric acid and excess water is urine. The urine goes through the convoluted tubules into larger tubules, then goes into the kidney's pelvis layer. The ureter carries the urine from both kidneys into the urinary bladder, then passes out a tube called the urethra. Kidneys can produce about 1-2 litres of urine everyday.

Other functions of the Kidney

Other that producing urine, kidneys can produce hormones called erythropoietin. It controls the production of the red blood cells. The kidney also maintains the blood pressure of the body by releasing a renin, which is a enzyme.

Bibliography / Citations

"Facts the Kidneys, Read Fun Facts on the Human Kidneys . . ." Facts the Kidneys, Read Fun Facts on the Human Kidneys . . . N.p., n.d. Web. 11 June 2012. <http://www.drstandley.com/facts_kidneys.shtml>.

"World Book Online Reference Center | Online Reference Book| Online Encyclopedia."World Book. N.p., n.d. Web. 11 June 2012. <http://www.worldbookonline.com/advanced/article?id=ar299420>.

"World Book Online Reference Center | Online Reference Book| Online Encyclopedia."World Book. N.p., n.d. Web. 11 June 2012. <http://www.worldbookonline.com/advanced/extmedia?id=ar299420>

"World Book Online Reference Center | Online Reference Book| Online Encyclopedia."World Book. N.p., n.d. Web. 11 June 2012. <http://www.worldbookonline.com/advanced/extmedia?id=ar299420>.

Simple Kidney Facts

1. The kidneys have a higher blood flow than even the brain, liver or heart.

2. The kidneys reabsorb and redistribute 99% of the blood volume and only 0.1% of the blood filtered becomes urine.

3. Kidney stones are an accumulation of mineral salts and mostly combined with calcium which can lodge anywhere along the course of the urinary tract.

4. Refined carbohydrates and sugar help the body make kidney stones.

5. Sugar will stimulate the pancreas to release insulin. This causes extra calcium to be excreted in the urine. . . alas, kidney stones.

6. An excess of milk or antacids may cause kidney stones.

7. Each kidney is about 4 ½ inches long.

8. Each kidney weighs approximately 4 to 6 ounces.

9. The kidneys of a newborn baby are about 3X larger in proportion to body weight as in the adult.

10. The volume of urine excreted daily varies from 1000 to 2000 ml.

How Kidneys Produce Urine Part 3

A portion of the blood that is still in the glomerulus flows into the capillaries. The capillaries surround the convoluted tubule. As the tubular fluid flows through the tubule, substances needed by the body are absorbed by the cells of the tubule wall. These substances, which include amino acids, glucose, and about 99 percent of water, then rejoin the blood in the capillaries. The capillaries return the blood to the heart by way of the renal vein.

How Kidneys Produce Urine Part 2

Nephrons have a network of small blood vessels, the glomerulus, which is surrounded by Bowman's capsule, that open's into a convoluted tubule. Pressure forces a lot of the blood plasma through the glomerulus then into the Bowman's capsule, then the tubular fluid passes into the convoluted tubule.

How Kidneys Produce Urine Part 1

Human kidneys have three layers called the cortex the medulla and the pelvis. The blood flows through the renal artery. The renal artery branches into smaller arteries in the medulla and the cortex. Then the arteries end in a blood filtration, also known as a nephron. A set of kidneys has close to 2 000 000 nephrons. Those 2 000 000 nephrons filter 1 900 L of blood everyday.