What is the bone that forms the posterior portion of the palate?

Answer 1

The palatine bones form the posterior portion of the hard palate. The anterior portion is formed by the maxillae.

Answer 2

The upper part of the cavity of the mouth ; a kind of
parabolic vault, formed by the two superior maxillary
bones, and the two palate bones, covered
with a thick and dense mucous membrane:
bounded, before and at the sides, by the superior
dental arch ; and, behind, by the velum palati.
A whitish line runs along the middle, from before
to behind ; at the anterior extremity of which
is a tubercle corresponding to the inferior orifice
of the anterior palatine canal. The arteries of
the palate and corresponding gums proceed from
the palatine, alveolar, infra-orbitar, labial, and
buccal branches. The veins follo« a similar
course. The nerves are given off from the palatine,
facial, infra-orbitar, superior dental, and
from the naso-palatine ganglion.