Question

what is vesicles and tubules

Answer 1

Vesicles: The vesicles are oval, membrane-bound vacuolar structures having diameter of 25 to 500 μm. They often remain isolated in the cytoplasm and occur in most cells but especially abundant in the SER.
Tubules: The tubules are branched structures forming the reticular system along with the cisternae and vesicles.

Answer 2

Vesicles are compartments formed by a lipid bilayer separating its contents from the cytoplasm or a fluid-based extracellular environment. They can contain either liquids or gases and have a wide range of functions in cells across the living world from regulating buoyancy to secreting hormones.

 tubule is: a small tube or fistular structure a minute tube lined with glandular epithelium any hollow cylindrical body structure a minute canal found in various structures or organs of the body