Question

why muscle cells have SER?​

Answer 1

Explanation:

In animal muscle cells, the regulation of calcium ion levels is an important part of muscle contraction. The smooth ER in muscle cells is responsible for releasing calcium ions when muscles need to contract. The flood of ions into the cytoplasm triggers the steps that lead to contraction.

Answer 2

Answer:

In animal muscle cells, the regulation of calcium ion levels is an important part of muscle contraction. The smooth ER in muscle cells is responsible for releasing calcium ions when muscles need to contract. The flood of ions into the cytoplasm triggers the steps that lead to contraction.