Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic inflammation of the joints. Autoimmune diseases are illnesses that occur when the body's tissues are mistakenly attacked by their own immune system.
What role did the bison or buffalo play in the culture of the Plains Indians? The bison were an important source of fur, food, and shelter for the Plains Indians. They used every part of the animals they killed. Bison were also an important part of their culture.
One of the most important aspects of the Sioux Indian life was the bison. They used all of the bison, not just its meat for food. They used the skin and fur for blankets and clothes. They tanned the hides to make the coverings for their teepees. Bones were used as tools. The bison hair was used to make ropes and the tendons could be used for sewing thread and bow strings. Hunting Bison Bison are huge and dangerous animals. The Sioux had to be brave and clever to hunt them. Sometimes a brave would run the bison down with his horse and use a spear or an arrow to take down the bison.