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.
1 Crow men hunted bison, sheep, deer, elk, and other game. 2  The main source of food for these nomadic Indians was Bison. 3  A popular Bison dish called pemmican, consisted of dried Bison meat mixed with berries and animal fat and could be preserved for months at a time. 4  Women gathered nuts, berries, herbs and seasonal roots. Crow women were known to cut off their hair as a means of grieving. 2  Warriors moved on to become chiefs of their clan only if they fulfilled several prerequisites and were then selected as chief by the council of chiefs.