Deep Space Nine (1993â1999) Star Trek: Deep Space Nine is also sometimes called DS9. It is set in the late 24th century, at the end of The Next Generation's time line and the start of Voyager's. It is not like TOS and TNG because it is set on a space station and is not about exploring.
The corpus spongiosum is the mass of spongy tissue surrounding the male urethra within the penis. Also called the corpus cavernous urethrae in older texts.
Erectile tissue in the clitoris and penis. Cross section showing the two corpora cavernosa near the top surface of the penis, and the corpus spongiosum surrounding the urethra near the bottom surface.