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.
<span>It is True - Sand that extends from a coast into open water is called a barrier spit.
Barrier spits are formed when there is a deposit on the shoreline due to the lateral movement of water.
The waves are known to hit the shoreline at a particular angle which cause the lateral movement of water accompanied with the sedimentation along the coastline in the direction of the wave motion.</span>
The mass of the object is 57 ml
Answer:
carbon dioxide
Explanation:
It is a non-flammable gas that extinguishes fire by displacing oxygen. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well.
