The Soviet Union duplicated its dual-launch feat with Vostok 5 and Vostok 6 (June 16, 1963). This time they launched the first woman (also the first civilian), Valentina Tereshkova, into space on Vostok 6. Launching a woman was reportedly Korolev's idea, and it was accomplished purely for propaganda value.
Lumen: A luminous term referring to the channel within a tube such as a blood vessel or to the cavity within a hollow organ such as the intestine. Lumen is a luminous term because it is Latin for light, including the light that comes through a window. When a hollow organ is cut across, you can see light through the space that has been opened. So the word lumen came to mean this space.
The seminal vesicles are paired organs of the male genitourinary system. Specifically, they are genital organs. The male genital organs include the penis, testes, excretory genital ducts, ductus deferens, seminal vesicles, prostate, and bulbourethral glands.Of these organs, the seminal vesicles, prostate, and bulbourethral glands are considered accessory glandular structures.nterior aspect of the seminal vesicles, terminal parts of the deferent ducts, and the prostate. (Source: Gray's Anatomy.). The ureters pass in between the superior, rounded aspects of the seminal vesicles and the superior portions of the ampullae of the ductus deferentes.