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Nephron. The functional unit of the kidney is called the nephron. Nephrons are composed of 2 elements: ? Glomerulus. Twisted ball of capillaries. Delivers fluid to the tubule. ? Renal tubule. Composed of a single layer of cells
Abstract. The many progressive achievements in knowledge about the structure and function of the nephron – the kid- ney's main morpho-functional unit – have always been influenced by philosophical theories, which for a long time have swung between vitalism and mechanism. From Galen's first imaginative vitalistic
nephrons in the kidney generate urine that is propelled to the ureters and then to the bladder for storage and excretion. The Urinary outflow tract: • monitors and regulates extra-cellular fluids. • excretes harmful substances in urine, including nitrogenous wastes (urea). • returns useful substances to bloodstream. • maintain
Matching: • ___ 6. acute cystitis a. Infection of renal pelvis & interstitium. • ___ 7. uremia b. Inflam. that is most common cause of end-stage renal failure. • ___ 8. glomerulonephritis c. Renal failure w/ elevated blood urea and creatinine. • ___ 9. pyelonephritis d. U.b. inflam. ranging from hyperemic mucosa to necrosis of u.b.
ZOO. Last Update: 2 November 2017. Part – I Structure of nephron and function of the kidney M - 126. M– Nephrons (Greek nephros="kidney") are renal or kidney tubules. Each kidney has over one million nephrons that are responsible for removing waste products from blood and maintaining water, salt and pH balance in
Late Distal. Tubule &. Collecting Duct. • ?-Intercalated &. Principal Cells. • H2O imp. w/o ADH. • H2O permeable with ADH. ~ 3% of NA+ reabsorbed - F ine Tu n in g. S ite. ~ 5% of NA+ reabsorbed ?-Intercalated. • Reabsorb K. • H excretion. Aldost. stim'd. • H PO excret. • NH excret. K+. ATP. ATP. H+. H+. Principal Cell.
Na+ actively transported from cell to blood. • Creates Na+ gradient favoring Na+ flow from lumen. • Na+ gradient used to transport glucose against concentration gradient (cotransport). • Glucose diffuses into blood passively. Passive Reabsorption in the. Proximal Tubule. • Cl- to be reabsorbed passively along electrical
Kidney Structure and the Nephron. Scott Gilbert, MD. Tufts University. School of Medicine. Page 1. Objectives. 1. Understand the roles of the kidney. 2. Understand the structure of the kidney, and how this structure facilitates its function. 3. Begin to appreciate the inter-dependence of regulatory mechanisms. Readings.
glomerular capsule (Bowman capsule) that encloses glomerulus. • parietal (outer) layer of Bowman capsule is simple squamous epithelium. • visceral (inner) layer of Bowman capsule consists of elaborate cells called podocytes that wrap around the capillaries of the glomerulus. • capsular space separates the two layers of
Understand the structure and function of the nephron;. ? know the roles of the glomerulus, proximal tubule, loop of Henle, distal tubule and collecting ducts on urine formation and composition. Understand the basis for the concentration of urine. ?. (counter-current). Understand the energy requirements of the normal. ?.
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