GENERAL HISTOLOGY

Detailed explanation-1: -T3 and T4 are released by the thyroid in response to thyroid-stimulating hormone produced by the anterior pituitary, and both T3 and T4 have the effect of stimulating metabolic activity in the body and increasing energy use.

Detailed explanation-2: -Because the thyroid hormones T3 and T4 control cellular metabolism throughout the body, when there is not enough of them for any reason, this metabolic function slows and becomes impaired.

Detailed explanation-3: -Thyroid hormone (T3 and T4) affects every cell and all the organs in your body by: Regulating the rate at which your body uses calories (energy). This affects weight loss or weight gain and is called the metabolic rate. Slowing down or speeding up your heart rate.

Detailed explanation-4: -Thyroid hormone (TH) regulates metabolic processes essential for normal growth and development as well as regulating metabolism in the adult (28, 40, 189). It is well established that thyroid hormone status correlates with body weight and energy expenditure (80, 127, 143).

Detailed explanation-5: -The thyroid creates the hormones T4 and T3 to control your metabolism. These hormones work throughout the body to tell the body’s cells how much energy to use. They control your body temperature and heart rate.