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
1. The cytoskeleton is the cytoplasmic structure that supports the cell, maintains its shape and holds or moves cell organelles. It is made of an extensive network of fibers dispersed in the cytoplasm and anchored in the plasma membrane. Its components are microtubules, microfilaments and intermediate filaments.. Microtubules are made of consecutive dimers of the protein tubulin (each dimer contains an alpha and a beta tubulin). Microtubules play a role in cell division; they are components of cilia and flagella and they also form centrioles.