  The Interacting Instanton Liquid Model is used to explore the role of
instanton induced dynamics in hadron structure. To support the validity of this
model in the chiral regime, the quark mass dependencies of several properties
are shown to agree with chiral perturbation theory, including the density of
eigenmodes of the Dirac operator and the masses of the pion and nucleon. A
quark mass m* = 80 MeV emerging naturally from the model is shown to specify
the mass scale above which the fermion determinant is suppressed, the zero
modes become subdominant, and the density of quasi-zero modes become
independent of the quark mass.
