URINARY SYSTEM INFORMATION- FUNCTIONS OF KIDNEYS-2-LESSON 72

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In this page we will see important function of the kidneys in our body. Removal of Urine:  Simple proteins are called amino acids are broken down to form urea in the liver from ammonia. The urea thus formed is brought into the bloodstream. From the bloodstream the nitrogenous waste in the form of urea is carried to the two kidneys. The urea is passed out of the kidney with water, salts, and acids. This is called urine. Urine then passes down to the two ureters (two tube like structure from kidney) to the bladder (a sac like structure) and then to the urethra (a small opening outside the body) and then passed outside of the body. Thus the urea formed in the body is removed from the body.

Electrolytes Balance:  Kidneys apart from removing urea from the blood, they also preserve the appropriate equilibrium of water, salts, and acids inside the body. Potassium, sodium, and some acids are called electrolytes. Electrolytes are the small molecules that conduct an electrical charge are essentially needed for the good function of muscle and nerve cells. The kidneys fine-tune the quantities of water and electrolytes by secreting some materials into the urine and suppress others into the bloodstream for the use in the body.

Endocrine Function of the Kidneys: Kidneys secrete two important hormones such as renin and erythropoietin into the blood. Renin is useful in the control of blood pressure. Erythropoietin (erythr/o means red, poietin means substance that forms) is a hormone that normalizes the production of RBCs or red blood cells. Thus kidneys perform exocrine function in the body. (exocrine means ductless). Vitamin D is also secreted by kidneys that is important for the calcium absorption from the intestine. Insulin and parathyroid hormone are removed and decomposed from the bloodstream by the kidneys.

Keywords: Urinary, kidneys, sugars and fats, proteins, urea, urine, urethra, ureters, electrolytes, nitrogenous, oxygen, carbon-di-oxide

In the above lesson we have seen about the functions of the kidney in general. In the next lesson we will see the anatomy of major organs of the URINARY SYSTEM. OK.

Come on…

To go to the next lesson from here please click the link below


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