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.
The Highland Lakes Web Page covers all six of the Highland Lakes in central Texas: Lake Buchanan, Inks Lake, Lake LBJ, Lake Marble Falls, Lake Travis and Lake Austin and several towns around the Highland Lakes. Four of the six Highland Lakes are normally constant level lakes for ideal boating and other water activities.he Deer Capital of Texas is what Llano County is aptly called. You will find some of the friendliest deer you have ever seen in Horseshoe Bay on Lake LBJ. Deer are also plentiful around Inks Lake at the golf course and at the State Park. You will find great fishing in all four of the Highland Lakes.