The<unk>  act on nearly every cell in the body. It acts to increase the basal metabolic rate, affect protein synthesis, help regulate long bone growth (synergy with growth<unk>  and neural maturation, and increase the body's sensitivity to catecholamines (such as adrenaline) by permissiveness. The<unk>  are essential to proper development and differentiation of all cells of the human body. These<unk>  also regulate protein, fat, and carbohydrate metabolism, affecting how human cells use energetic compounds. They also stimulate vitamin metabolism. Numerous physiological and pathological stimuli influence<unk> synthesis.<unk> leads to heat generation in humans. However, the thyronamines function via some unknown mechanism to inhibit neuronal activity; this plays an important role in the hibernation cycles of mammals and the moulting behaviour of birds. One effect of administering the thyronamines is a severe drop in body temperature.
Thyroid hormones
Sex hormone
Gastrointestinal hormone
Hormone
Xenohormone
Thyroglobulin
Thyroid-stimulating hormone
Lipoprotein