For 10 points, name this part of the female reproductive system which people might feel an unconscious desire to return to.
A condition named for this thing is linked to the Cassandra complex in a book by Laurie Layton Schapira. Bracha Ettinger theorized a "borderspace" named after the Latin name for this thing in response to Freud's theory that the denial of this thing is necessary for ego development. In his theory of the hero's journey, Joseph Campbell identified Paradise and the belly of the whale with this thing. The ancient Greeks thought that many ailments were caused by a (*) "wandering" version of this thing, which is the ultimate source of the term "hysteria." Karen Horney postulated a male counterpart to penis envy centered on this body part. For 10 points, name this part of the female reproductive system which people might feel an unconscious desire to return to.
A condition named for this thing is linked to the Cassandra complex in a book by Laurie Layton Schapira.
womb [or uterus; prompt on "matrix"] 