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.
organs in the human body functions location definition of organs an organ is a structure that contains at least two different types of tissue functioning together for a common purpose there are many different organs in the body the liver kidneys heart even your skin is an organusually there is a main tissue and sporadic tissuesthe main tissue is the one that is unique for the specific organ for example main tissue in the heart is the myocardium while sporadic are the nerves blood connective etcfunctionally related organs often cooperate to form whole organ systems there are 10 major organ systems in the human bodyhere are many different organs in the body the liver kidneys heart even your skin is an organ usually there is a main tissue and sporadic tissues