Serous membranes line and enclose several body cavities where they secrete a lubricating fluid which reduces friction from muscle movement. Serous membranes are responsible for secreting serous fluids. Some organs that have serous membranes are the uterus, stomach, pericardium (the area that surrounds the heart), the pleural cavity (the area that surrounds the lungs) and the paritoneal cavity (the cavity that lines the abdominal organs).
Meriwether Lewis died at age 35. Meriwether Lewis was serving as governor of Missouri Territory in 1809 (just 3 years after the expedition ended). Lewis, a troubled individu â¦ al, was not suited for the bureaucratic life and found himself deep amongst petty and jealous administrators.
Captain Meriwether Lewis, aged twenty-nine, set off from Pittsburgh by boat at the end of August with a party of men and his Newfoundland dog, Seaman, to begin the first American expedition to the Pacific overland (Andrew Mackenzie had crossed Canada to the Pacific in the 1790s).