A doctor has a patient with very low levels of thyroxine in the blood but high levels of
TSH. Is the person’s problem in the thyroid gland or the pituitary gland? Explain your
answer. What condition might this hormonal imbalance cause?
The person's problem is likely in the thyroid gland. Thyroxine is produced by the thyroid gland in response to TSH (Thyroid Stimulating Hormone) produced by the pituitary gland. When levels of thyroxine are low, the pituitary gland will produce more TSH in an attempt to stimulate the thyroid gland to produce more thyroxine.
This hormonal imbalance could indicate hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormone. Symptoms of hypothyroidism can include fatigue, weight gain, cold intolerance, constipation, dry skin, and hair loss. It can have serious effects on the body if left untreated.