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 abdominal (peritoneal) cavity contains many vital organs which can be described as either hollow or solid. Hollow organ injuries â A hollow organ is an organ that contains a lumen, or a hollow space. Hollow organs are usually injured by a penetrating trauma. These injuries usually involve a perforation, or tear, of the organ. When a hollow organ is torn, the contents of that organ can leak into the abdominal cavity, increasing the risk of infection and potentially leading to sepsis. The following are considered hollow organs: esophagus, small intestine, colon (large intestine), stomach. Solid organ injuriesâ The solid organs consist of the remainder of the organs in the abdominal cavity. The following organs are considered solid organs: gall ...