An individual with a low metabolic rate improves with the administration of thyroid hormones, but shows no improvement upon injection of TSH. This person's low metabolic rate originates at what gland?

This person's low metabolic rate originates in the thyroid gland.

Explanation:

The pituitary gland regulates normal thyroid function. The pituitary produces thyroid-stimulating hormone (TSH), which causes the thyroid gland to produce thyroid hormone for the body. The level of TSH is regulated by the amount of thyroid hormone in the blood. If the thyroid hormone level is low, the pituitary produces more TSH. If the level of this hormone is high, not as much TSH is needed.

Considering that if an individual receives an injection of HRT it does not improve their metabolism, the reason they have low metabolism is that the thyroid gland is not working well.

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