It permits calcium to leave the sarcoplasmic reticulum and enter the cytosol. During muscle contraction, the binding of acetylcholine initiates an excitatory impulse, which is transmitted to the deep of the muscle via T tubules. T tubules are the invaginations of cell membranes of muscle cells (sarcolemma). When the action potential travel down the t-tubules, they change shape and allow the calcium ions to enter into the sarcoplasm from the sarcoplasmic reticulum.
Answer:
It would be the temperate forest
Explanation:
Since it has decideous trees, the trees display four seasons and temperate shows the four seasons.
Answer:
by using public transportation instead of driving a car. O by moving to a large city, where air quality is better. by removing vegetation such as trees and shrubs. What is the answer.
Explanation:
# need any queshtions answered within minutes/seconds text me
-we all have those moments where we need those queshtions answered like that!
I think it's the first one but I'm not sure