Because the stomach is lined by a mucous membrane (the gastric mucosa)
Answer:
the presence of dimples im pretty sure
Explanation:
The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.