Q: Muscle cells rely on changes in membrane potential in order to initiate contraction. Which of the following is incorrect regarding muscle cells and their membrane potential dynamics?
A		Depolarization of the muscle membrane results in an influx of calcium
B		Contraction is induced directly by calcium influx from outside the cell as well as efflux from the sarcoplasmic reticulum
C		Efflux of calcium ions from the sarcoplasmic reticulum initiates hyperpolarization of the cell, resulting in the contraction of the cell
D		Muscle contraction is an active process

Membrane Transport and Signalling | Musculoskeletal System |