NYPD cop who sifted through ten tons of 9/11 debris says he saw a ghost 'trying to help' while searching for clues to identify victims from attacks at landfill, book reveals. 1  Sgt. Frank Marra, 48, said he saw ghost of African American woman, who was dressed in white as a Red Cross worker from Second World War.
oxygen debt. a state that arises in very active muscles when insufficient oxygen is supplied by the lungs, causing the muscle tissue to respire anaerobically with the production of LACTIC ACID. When muscular activities slow down, the rate and depth of breathing remains at a high level until the lactic acid has been oxidized.
Oxygenated blood is blood in which oxygen is attached to the haemoglobin molecules in the red blood cells. It is bright red because the attached oxygen makes the normally blue haemoglobin molecules turn red.When blood has delivered oxygen to the cells, it is described as deoxygenated.It now looks a very dark red because so many of the haemoglobin molecules have turned blue again. The mixture of blue and red molecules looks dark red to our eyes.lood in the arteries is oxygenated. Blood in the veins is de-oxygenated. With the exception of the pulmonary arteries which carry de-oxygenated blood, and the pulmonary veins â¦ that carry oxygenated blood.