The coronal line would be in be middle my friend. Just draw the line right at the smack dab middle of the side of the model
Your answer is hypothesis i think. There were no given answer choices so i went with what i think youre asking.
Answer:
A- I have not idea sorry!
B- Looks like a vacuole
C- Cell membrane
D- Endoplasmic Reticulum
Explanation:
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.