The effects of the Polyakov loop and of a regularization procedure thatallows the presence of high momentum quark states at finite temperature isinvestigated within the Polyakov-loop extended Nambu--Jona-Lasinio model. Thecharacteristic temperatures, as well as the behavior of observables that signaldeconfinement and restoration of chiral and axial symmetries, are analyzed,paying special attention to the behavior of strangeness degrees of freedom. Weobserve that the cumulative effects of the Polyakov loop and of theregularization procedure contribute to a better description of thethermodynamics, as compared with lattice estimations. We find a faster partialrestoration of chiral symmetry and the restoration of the axial symmetryappears as a natural consequence of the full recovering of the chiral symmetrythat was dynamically broken. These results show the relevance of the effects ofthe interplay among the Polyakov loop dynamics, the high momentum quark satesand the restoration of the chiral and axial symmetries at finite temperature.
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