Ryan Seacrest was the host of American Idol (season 8).
Extraglomerular mesangial cells -LRB- also known as Lacis cells or Polkissen cells -RRB- are light-staining pericytes in the kidney found outside the glomerulus , near the vascular pole .. pericytes. pericytes. kidney. kidney. glomerulus. glomerulus. vascular pole. vascular pole. They resemble smooth muscle cells and play a role in renal autoregulation of blood flow to the kidney and regulation of systemic blood pressure through the renin-angiotensin system .. kidney. kidney. renal autoregulation. autoregulation#Renal autoregulation. blood pressure. blood pressure. renin-angiotensin system. renin-angiotensin system. Extraglomerular mesangial cells are part of the juxtaglomerular apparatus , along with the macula densa cells of the distal convoluted tubule and the juxtaglomerular cells of the afferent arteriole .. juxtaglomerular apparatus. juxtaglomerular apparatus. macula densa. macula densa. distal convoluted tubule. distal convoluted tubule. juxtaglomerular cells. juxtaglomerular cells. afferent arteriole. afferent arteriole. The specific function of extraglomerular mesangial cells is not well understood , although it has been associated with the secretion of erythropoietin and secretion of renin .. erythropoietin. erythropoietin. They are distinguished from intraglomerular mesangial cells , which are situated between the basement membrane and the epithelial cells within the glomerulus .. glomerulus. glomerulus. intraglomerular mesangial cells. intraglomerular mesangial cells