Reabsorption,Secretion
The proximal tubule is the portion of the duct system of the nephron of the kidney which leads from Bowman's capsule to the loop of Henle.  Composed of a glomerulus and the Bowman's capsule, the renal corpuscle (or Malpighian corpuscle) is the beginning of the nephron. It is the nephron's initial filtering component. The glomerulus is a capillary tuft that receives its blood supply from an afferent arteriole of the renal circulation. The renal tubule is the portion of the nephron containing the tubular fluid filtered through the glomerulus. After passing through the renal tubule, the filtrate continues to the collecting duct system. Each nephron is composed of an initial filtering component (the  renal corpuscle ) and a tubule specialized for reabsorption and secretion (the renal tubule). The renal corpuscle filters out solutes from the blood, delivering water and small solutes to the renal tubule for modification. The renal tubule is the portion of the nephron containing the tubular fluid filtered through the glomerulus. After passing through the renal tubule, the filtrate continues to the collecting duct system. Blood entering the kidney is filtered of cells and large proteins. The filtrate enters the tubules and an exchange of ions (sodium, potassium, calcium) takes place and water is retained (which concentrates the urine). The tubules act in part as a counter-current exchange system to remove hydrogen ions from the body. connects your kidney to your bladder. The nephron (from Greek νεφρός - 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. The renal tubule is the portion of the nephron containing the tubular fluid filtered through the glomerulus. After passing through the renal tubule, the filtrate continues to the collecting duct system. Answers. Best Answer: The two functions are: 1. Reabsorption. The renal tubule reabsorbs the fluid or filtratepassing through the tubular system, of the nephron. 2. Secretion. The function of the renal tubule is tubular secretion.Tubular reabsorption removes substances from the filtrate into the blood and also addsmaterials to the fluid from the blood. For more details visit the source. Source(s): http://www.tpub.com/content/armymedical/...  Two major parts of the nephron are the renal corpuscle and the renal tubule. The corpuscle has the glomerulus (see illustration). Cleansing of the blood occurs in this part of the nephron. The glomerulus, which is a tuft of very small blood vessels, has tiny holes that act as a filter.  Renal tubules are essential structures in the kidneys. This lesson explores the function of the renal tubule and its parts, including the proximal and distal convoluted tubules, the loop of Henle, and the collecting duct. Learn how these components work together to absorb materials and form urine. You can remember which part of the loop of Henle is important in the reabsorption of water really easily. Recall that the proximal tubule reabsorbs the majority of water, and the first structure of the loop of Henle to connect to the proximal tubule is the thin descending limb. Ultrafiltrate flows through the first part of the renal tubule, called the proximal convoluted tubule, which is a section of the renal tubule mainly located in the kidney's cortex that is responsible for the reabsorption of the majority of ultrafiltrate. The ultrafiltrate will then flow into the loop of Henle. You can remember which part of the loop of Henle is important in the reabsorption of water really easily. Recall that the proximal tubule reabsorbs the majority of water, and the first structure of the loop of Henle to connect to the proximal tubule is the thin descending limb. Proximal Convoluted Tubule (PCT). This is the first part of the renal tubule and it lies in the cortex of the kidney, close to the renal corpusle. Fluid that is filtered from the Bowman’s Capsule enters into the proximal tubule. It contains brush border, and is made up of cubiodal epithelium. As we have learned from my previous article on nephrons, the renal tubule is the part of the nephron in which the filtrate from the glomerulus enter. It consists of the following: 1  Proximal convoluted tubule.
https://en.wikipedia.org/wiki/Proximal_convoluted_tubule https://en.wikipedia.org/wiki/Nephron https://en.wikipedia.org/wiki/Nephron http://www.answers.com/Q/What_is_the_function_of_the_tubules_found_in_the_kidney https://en.wikipedia.org/wiki/Nephron https://answers.yahoo.com/question/index?qid=20101214082145AAyV2Px http://www.kidneyhealthcare.com/2010/06/parts-of-nephron.html http://study.com/academy/lesson/the-renal-tubule-definition-function-terms.html http://study.com/academy/lesson/the-renal-tubule-definition-function-terms.html http://www.interactive-biology.com/3816/nephrons-function-of-the-various-segments-of-the-renal-tubule/
what are two functions of the renal tubule