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
