"The Mississippi, Ohio, and Tennessee rivers" are the ones among the following choices given in the question that is <span>included in key waterways in the South during the Civil War. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has helped you.</span>
Answer:
a. Release of acetylcholine from the synaptic vesicles
Explanation:
The events on neuromuscular junction:
Action potential travels through the membrane of the presynaptic cell causing the voltage-gated channels permeable to calcium ions to open. Ca2+ flow through the presynaptic membrane and increase the Ca concentration in the cell which will activate proteins attached to vesicles that contain a neurotransmitter (e.g. acetylcholine). Vesicles fuse with the membrane of the presynaptic cell, thereby release their contents into the synaptic cleft-space between the membranes of the pre- and postsynaptic cells. Neurotransmitter ACh binds to its receptors on the postsynaptic membrane and its binding causes depolarization of the target cell (muscle cell). Depolarization occurs because sodium enters the cell as a result of neurotransmitter receptor binding.
8.1956m It gave you to the 10,000th place of measurement
The answer would be C) The solute concentration is equal on both sides of the cell membrane.
This is correct because in an isotonic solution, they would have the exact salt concentration as the blood surrounding the cell. There won't be an effect on the surrounding cells. So, the cells won't gain or loose any water.
Hope this helps!:)
