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.
The answer is a. I'm pretty sure
When speaking about pre-molars, we would only contain 8 pre-molars, and this is due because we only contain 32 teeth.
We have : (8 pre-molars)
We have : (12 molars)
We have : (8 incisors)
And for the last part, we would contain : (4 canines).
Answer:
Down, sea urchins eat kelp and clip the bottoms stopping kelp from regrowing.
Explanation:
Answer:
It is ethical
Explanation:
It allows somebody a small chance of being able to walk again, or be able to do some functions that a previous injury did not allow them to complete
