The endoplasmic reticulum in myocytes is called ________ reticulum.

Endoplasmic Reticulum

The organelles of the endoplasmic reticulum are composed of both smooth and rough types. The rough type contains ribosomes on its surface. The smooth type has no ribosomes. Both types create a network of passageways throughout the cytoplasm.

Myocytes

Muscle cells responsible for contraction and movement in the body.