These cells transmit messages to the brain, where specific smells or tastes are identified. 1  Olfactory (smell nerve) cells are stimulated by the odors around usthe fragrance from a rose, the smell of bread baking.  Gustatory (taste nerve) cells are clustered in the taste buds of the mouth and throat. They react to food or drink mixed with saliva. Many of the small bumps that can be seen on the tongue contain taste buds. These surface cells send taste information to nearby nerve fibers, which send messages to the brain.
Anemia refers to a lowering of red blood cell count. In terms of colon cancer anemia may be caused by a microscopic amount of chronic blood loss in the stool. In this case, iron is lost with the red blood cells and can slowly deplete the total body stores of iron.
Symptoms can also vary according to the specific location within the colon where the tumor is located. Some symptoms and signs of colon cancer are: 1  rectal bleeding or blood in the stool, 2  dark-colored stool, 3  change in bowel habits,  change in stool consistency,