Answer:
Unfortunately, I cannot provide a visual model for you. However, I can explain how the various factors are involved in cell communication pathways in the body.
Step-by-step explanation:
The hypothalamus, a region in the brain, produces the thyroid-releasing hormone (TRH) which stimulates the pituitary gland to release thyroid-stimulating hormone (TSH). TSH then stimulates the thyroid gland to secrete thyroxine (T4), which is a hormone that increases the metabolic rate of many cells in the body. The level of thyroxine in the blood is monitored by the hypothalamus and pituitary gland. If the level is too low, more TRH and TSH are produced to stimulate the thyroid gland to secrete more T4. If the level of T4 is too high, this inhibits the production of both TRH by the hypothalamus and TSH by the pituitary gland, reducing the amount of T4 produced. This negative feedback loop helps maintain the proper balance of thyroid hormones in the body.