![The nerve impulse that initiates muscular contraction](https://www.gkseries.com/blog/wp-content/uploads/2021/12/Biomolecules-Multiple-Choice-Questions-and-Answers-62.jpg)
Q. The nerve impulse that initiates muscular contraction
- begins with the binding of acetyl choline to receptors in the sarcoplasmic reticulum
- causes both the plasma membrane and the transverse tubules to undergo hyperpolariation
- causes opening of calcium channels which lead to an increase in calcium contreation within the sarcomere
- prevents sodium entering the sarcomere
Answer: causes opening of calcium channels which lead to an increase in calcium contreation within the sarcomere