Jackson County Donates to Special Olympics Jackson County associates made a donation of $400 to Special Olympics. Parks + Rec also donated 600 boxes of candy to the cause.
Transverse tubules are extensions of the cell membrane that penetrate into the centre of skeletal and cardiac muscle cells. With membranes that contain large concentrations of ion channels, transporters, and pumps, T-tubules permit rapid transmission of the action potential into the cell, and also play an important role in regulating cellular calcium concentration. Through these mechanisms, T-tubules allow heart muscle cells to contract more forcefully by synchronising calcium release throughout
renal tubule. The part of a nephron through which renal filtrate from the renal corpuscle flows and is changed to urine by reabsorption and secretion. The parts, in order, are the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule, and collecting tubule.See also: tubule.enle's t's the straight ascending and descending portions of a renal tubule forming Henle's loop. lactiferous t's galactophorous tubules. mesonephric t's the tubules comprising the mesonephros, or temporary kidney, of amniotes. metanephric t's the tubules comprising the permanent kidney of amniotes.