The upper part of the uterus is called the corpus; the lower, narrower part of the uterus is called the cervix. The cervix is the opening between the uterus and the vagina. The outer layer of the uterus is called the myometrium. The myometrium is thick and composed of strong muscles.
He appeared with Wills and the other Playboys in several movies, including Bob Wills and His Texas Playboys (1944), Rhythm Roundup (1945), Blazing the Western Trail (1945), Lawless Empire (1945) and Frontier Frolic (1946). His voice matured in the middle to late 1940s.
One of those students (in the late 1940s) was Hugh Hefner. Hefner formally acknowledged the origin of the Playboy Bunny in a letter to Bunny's Tavern, which is now framed and on public display in the bar. The Bunny's Tavern usage of the outfit is considered a variant of Showgirl.