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.
The American bison is the largest land animal in North America. Large bulls can stand 5 to 6 feet at the hump, measure 10 to 12 feet from nose to rump, and weigh up to 2,200 pounds!Bison live from 12 to 15 years in the wild, and can be found living in the plains, prairies, river valleys, and in forests.he American bison is the largest land animal in North America. Large bulls can stand 5 to 6 feet at the hump, measure 10 to 12 feet from nose to rump, and weigh up to 2,200 pounds!