Q:Fact 1: Thyroid hormones increase the rate of metabolism in cells throughout the body. Fact 2: TSH, which is secreted by the pituitary gland, stimulates the thyroid gland to produce hormones. Given the two facts above, answer the question "Which gland has the largest impact on human metabolism?" with the following options: - three - Pituitary - Energy - Chlorophyll - Sweat - energy usage - Salivary - Mammary
A:
Pituitary