Thyroid system
An overview of the thyroid system.
This is a diagram of the thyroid system. The hypothalamus is shown in the center of the brain. It secretes TRH that activates the anterior pituitary gland to release TSH that travels down the neck to they thyroid gland. There, T3 and T4 are activated and produce increased metabolism, growth and development, and increased catecholamine effect that flow down through the body. The thyroid glad is also depicted as having a negative mechanism that reports back to the anterior pituiatary and hypothalamus.
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