Name: Theories for Ascent of Sap
Uploaded: 2019-07-19
Duration: 5 min 10 s
Description: It's a gravity-defying stunt that the sap pulls off! How do water and minerals travel upwards from the root via the xylem? Learn the theories that explain th...

Question

Describe the structure and function of Nephron. Draw the labelled diagram.

Accepted Answer

Each nephron consists of a blood supply and a specialised network of ducts called a tubule. For each nephron, an afferent arteriole feeds a high-pressure capillary bed called the glomerulus. Blood is filtered by the glomerulus to produce a fluid which is caught by the nephron tubule, called filtrate. The proximal end of the tubule that surrounds the glomerulus and catches the filtered fluid is the glomerular (Bowman’s) capsule. The glomerulus and glomerular capsule together form the renal corpuscle. Filtered fluid caught by the glomerular capsule (filtrate) travels through the rest of the tubule to the proximal convoluted tubule (PCT), loop of Henle and distal convoluted tubule (DCT), in this order, before exiting the nephron into common collecting ducts shared by many nephrons.

Nephrons are the basic functional and structural units of the kidney; they cleanse the blood of toxins and balance the constituents of the circulation to homeostatic set points through the processes of filtration, reabsorption, and secretion.

Describe the structure and function of Nephron. Draw the labelled diagram.

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