How is rheumatoid arthritis distinguished from osteoarthritis?
a. Rheumatoid arthritis is an autoimmune, systemic disease; osteoarthritis is a degenerative disease of the joints.
b. Rheumatoid arthritis is an autoimmune, degenerative disease; osteoarthritis is a systemic inflammatory disease.
c. People with osteoarthritis are considered to be genetically predisposed; there is no known genetic component to rheumatoid arthritis.
d. Osteoarthritis is often caused by a virus; viruses play no part in the pathogenesis of rheumatoid arthritis.
ANS: A
RA is thought to be an autoimmune disorder. Degenerative joint disease is also known as osteoarthritis.
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