The Thyroid Hormone Production System

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The thyroid hormone production system is regulated by a negative feedback loop. This invovles the hypothalamus and the pituitary and thyroid glands. When the levels of thyroxine and triiodothyronine increase, they prevent the release of both of the thyroid hormones. This allows the system to maintain and regulate a constant level of the hormones in the body.

Patient 1 is diagnosed with hypothyroidism also known as overactive thyroid. The symptoms of this disorder are anxiety, irritability, double vision, eyes that bulge out, thinning or losing hair, irregular heartbeat menstrual changes, muscle weakness, rapid nail growth, rapid heartbeat over 100 bpm, shaky hands, sweating, thinning skin and weigh loss.

Patient 2 is diagnosed with

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