Documents FIGURE 15.1. Calcium ions entering the cytosol from the extracellular medium activate regulated...

FIGURE 15.1. Calcium ions entering the cytosol from the extracellular medium activate regulated exocytosis in the proximal axon terminal of a pain receptor nerve cell. UNFIGURE…

Documents UNFIGURE 14.1.. FIGURE 14.1. The positively charged potassium ion cannot cross the lipid bilayer,...

UNFIGURE 14.1. FIGURE 14.1. The positively charged potassium ion cannot cross the lipid bilayer, but passes easily through a water-filled tube in a potassium channel. FIGURE…