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.
Internal human organs are also called viscera. Viscera refers to the internal organs in the chest, abdomen, and pelvis. Cooked offal, which is called viscera when inside the body.The term visceral reaction refers to something that is felt emotionally.View slideshow of images above.nternal human organs are also called viscera. Viscera refers to the internal organs in the chest, abdomen, and pelvis. Cooked offal, which is called viscera when inside the body.