Abstract
Thyroid-catecholamine and thyroid-acetylcholine interrelation has been known for a number of years. Catecholamines and thyroid hormones affect the peripheral response to each other (1). Catecholamines and acetylcholine also affect the thyroid directly, stimulating some functions and inhibiting others, in conjunction or not with TSH. This review covers only catecholamine and acetylcholine effects on the thyroid gland.