Depolarization of a skeletal muscle cell leads to the opening of more channels that only allow potassium entry.

Question

Quizplus · Accepted Answer

Depolarization of a skeletal muscle cell leads to the opening of voltage-gated calcium channels, which allow calcium ions to enter the cell. This triggers the release of calcium from the sarcoplasmic reticulum, leading to muscle contraction. Potassium channels do exist in skeletal muscle cells, but their opening is not directly related to depolarization and they do not contribute significantly to the depolarization process.

Depolarization of a Skeletal Muscle Cell Leads to the Opening