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Outside the capsule, there are two poles: The vascular pole is the side with the afferent arteriole and efferent arteriole. The tubular pole, is the side with the proximal convoluted tubule. Inside the capsule, the layers are as follows, from outside to inside: [citation needed] Parietal layer—A single layer of simple squamous epithelium ...
The Bowman's capsule has an outer parietal layer composed of simple squamous epithelium. The visceral layer, composed of modified simple squamous epithelium, is lined by podocytes, podocyte foot processes (pedicels), that wrap around glomerular capillaries. These pedicels interdigitate with pedicels of adjacent podocytes forming filtration slits.
Bowman's capsule filters the blood, retaining large molecules such as proteins while smaller molecules such as water, salts, and sugars are filtered as the first step in the formation of urine. Although various viscera have epithelial layers, the name visceral epithelial cells usually refers specifically to podocytes, which are specialized ...
The Bowman's capsule, also called the glomerular capsule, surrounds the glomerulus. It is composed of a visceral inner layer formed by specialized cells called podocytes , and a parietal outer layer composed of simple squamous epithelium .
Simple squamous - urinary: kidney - distal convoluted tubule: Simple cuboidal, without microvilli - urinary: kidney - collecting duct: Simple cuboidal - urinary kidney - Bowman's capsule: Simple squamous - urinary kidney - Loop of Henle: Simple squamous - urinary kidney - descending thin limb: Simple squamous - urinary kidney - descending thick ...
Simple squamous epithelium falls under the physiological category of exchange epithelium due to its ability to rapidly transport molecules across the tissue layer. To facilitate this movement, some types of simple squamous epithelium may have pores between cells to allow molecules to move through it, creating a leaky epithelium.
The glomerular basement membrane of the kidney is the basal lamina layer of the glomerulus.The glomerular endothelial cells, the glomerular basement membrane, and the filtration slits between the podocytes perform the filtration function of the glomerulus, separating the blood in the capillaries from the filtrate that forms in Bowman's capsule. [1]
The proximal tubule is the segment of the nephron in kidneys which begins from the renal pole of the Bowman's capsule to the beginning of loop of Henle.At this location, the glomerular parietal epithelial cells (PECs) lining bowman’s capsule abruptly transition to proximal tubule epithelial cells (PTECs).