  We study the concept of coarse disjointness and large scale $n$-to-$1$
functions. As a byproduct, we obtain an Ostrand-type characterization of
asymptotic dimension for coarse structures. It is shown that properties like
finite asymptotic dimension, coarse finitism, large scale weak paracompactness,
ect. are all invariants of coarsely $n$-to-$1$ functions. Metrizability of
large scale structures is also investigated.
