Graves' disease is caused by an autoimmune response that primarily affects the ____.

A) bone marrow
B) myelin sheath
C) thyroid
D) pancreas
E) joint collagen

Graves' Disease

An autoimmune disorder that results in the overproduction of thyroid hormones (hyperthyroidism), characterized by symptoms such as enlarged thyroid, anxiety, hand tremor, heat sensitivity, weight loss, puffy eyes, and irregular heartbeat.

Autoimmune Response

Immune response that targets one’s own body tissues.