A stimulus from a sensory cell or another neuron depolarizes the target neuron to its threshold potential (-55 mV), and Na channels in the axon hillock open, starting an action potential. Once the sodium channels open, the neuron completely depolarizes to a membrane potential of about +40 mV.
Lake Lyndon B. Johnson (more commonly referred to as Lake LBJ and originally named Lake Granite Shoals) is a reservoir on the Colorado River in the Texas Hill Country in the United States. The reservoir was formed in 1950 by the construction of Granite Shoals Dam by the Lower Colorado River Authority.he lake was originally called Lake Granite Shoals. The dam would be renamed Wirtz Dam in 1952 for Alvin J. Wirtz, the first general counsel of the LCRA, and the lake was renamed to Lake Lyndon B. Johnson in 1965 in honor of US President Lyndon Baines Johnson.
LAKE HOLLINGSWORTH TRAIL DRIVING DIRECTIONS From 1-4 east or west, take the Polk Parkway (Toll Road 570) and exit at US Hwy. 98 north, Exit 10.Continue north to Edgewood Drive. Turn left (west) to Cleveland Heights Boulevard and then turn right. Cleveland Heights will end at the Lake-land Yacht Club.ake Hollingsworth is one of the most popular recreational lakes in Polk County. Relatively small, the lake has an average depth of 3.6 feet, with a surface area of 358.15 acres.The City of Lakeland recently restored the lake profile, stocked the lake with Sunshine Bass and added a lovely boardwalk.