The model shows details of complete arm, with normal position of the organ (stomach, intestinal caeca, pyloric caica, ampullae), ring canal, polian vesicles, skeleton of arm with nervous system.
In the cut surface stone canal, axial organ and madreporite are also shown.
Complete with key-card. 

Zoological Models School Lab Equipment Suppliers in India

Ltekonline are the manufacturers of Star Fish Model Zoological Models used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and School Zoological Models for Engineering Teaching Lab in Universities