PHIL 2130 Lecture Notes - Lecture 30: Distal Convoluted Tubule, Proximal Tubule, Renal Function
6 May 2020
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Document Summary
Visceral layer has podocytes (modified squamous epithelia) that wrap projections around a single layer of endothelial cells of glomerular capillaries and form inner wall of corpuscle. Parietal layer forms outer wall, with simple squamous epithelium. Proximal convoluted tubule cells have microvilli with brush border, which increases surface area. Juxtaglomerular apparatus helps regulate blood pressure in kidney. Macular densa cells: cells in final part of ascending loop of henle. Juxtaglomerular cells: cells of afferent and efferent arterioles contain modified smooth muscle fibers. Last part of distal convoluted tubule and collecting duct: receptors for adh (antidiuretic hormone) and for aldosterone. Excretion of any solute = glomerular filtration + secretion reabsorption-review physiology and but not too much of focus. Ureters: -each of two ureters transports urine from renal pelvis of one kidney to the bladder. Peristaltic waves, hydrostatic pressure and gravity move urine.
