Smooth muscles depolarize as a result of a transmembrane current of Calcium ions. When an action potential depolarizes the muscle cell membrane, it also travels into the body of the cell via the t-tubules. Unlike skeletal muscle, smooth muscle is dependent in two sources of calcium in order to intiate contraction. These two sources are calcium sequestered in the S.R. of the smooth muscle cell.
Loss of habitat for the surrounding wildlife. therefore a long term affect of the wildlife that lived there. If deforestation continues the forest and its inhabitants with either have to relocate or die trying to find a new place to live.
