You are presented with the question "Which gland has the largest impact on human metabolism?" and the following answer choices: 
- three
 - Pituitary
 - Energy
 - Chlorophyll
 - Sweat
 - energy usage
 - Salivary
 - Mammary

Now knowing that thyroid hormones increase the rate of metabolism in cells throughout the body and tSH, which is secreted by the pituitary gland, stimulates the thyroid gland to produce hormones, choose the best answer.


 

  Pituitary       