['These', 'equations', ',', 'along', 'with', 'conservation', 'of', 'momentum', ',', 'provide', 'a', 'continuum', 'hydrodynamic', 'description', 'modeling', 'active', 'polar', 'viscous', 'gels', 'as', 'an', 'energy', 'consuming', ',', 'anisotropic', ',', 'non', '-', 'Newtonian', 'fluid', '[', '37,33,32,41', ']', '.']