Smooth endoplasmic reticulum 3 Endoplasmic reticulum lacking polyribosomes. Cisternae are often tubular and branching. Contains some enzymes required for steroid synthesis. Also serves as a site for oxidation and detoxification reactions, perticularly in hepatocytes. Smooth endoplasmic retimulum 1 Endoplasmic reticulum lacking polyribosomes.
Cisternae are often tubular and branching.
Contains some enzymes required for steroid synthesis. Smooth muscle 35 Long spindle-shaped cells arranged so that the thin end of one cell is adjacent to the thickest portion of another cell. An aggregation of many smooth muscle cells forms the contractile portions of various organs. An aggregation of many smooth muscle cells forms the contractile portions of various organs. 2 Long spindle-shaped cells arranged so that the thin end of one cell is adjacent to the thickest portion of another cell.