Partonic content of h1(x) and h2(x).

A light-cone wavefunction interpretation is presented for the polarized distribution functions h1(x) and h2(x). All matrix elements for moments of these distributions are given in terms of overlap integrals between Fock state amplitudes of the target state. In a suitable spinor basis, h1(x) involves only diagonal matrix elements so can be interpreted as a density. Matrix elements of h2(x) connect Fock states differing by one gluon so that h2(x) has no simple interpretation as a density. Nevertheless, in the wavefunction decomposition, h2(x) is described through a compact set of elementary quark-gluon processes which are averaged over the target wavefunction.