The nephron (from Greek Î½ÎµÏÏÏÏ - nephros, meaning kidney) is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as urine. nephron eliminates wastes from the body, regulates blood volume and blood pressure, controls levels of electrolytes and metabolites, and regulates blood pH.
Most people use a Leg Curl Machine at the gym to work out their hamstrings, but all you need are some ankle weights or a set of resistance bands. Wrap the weights or bands around your ankles, and, keeping your upper leg immobile, bend your knees and try to touch your butt with your heels.
Hamstrings. Three muscles called the semitendinosus, semimembranosus and biceps femoris make up your hamstrings. These muscles run along the back of your thighs and are easily injured or strained. They run from your pelvis to the back of your knees and together work to stabilize the hip joint. The hamstrings are the primary muscles that perform hip extension during normal walking. In addition to hip extension, the hamstrings also bend your knees. These muscles propel your body forward and increase your walking speed.