Chemical substance secreted by the hypothalamus. Regulates secretion of thyroid-stimulating hormone (TSH) by the pituitary gland.
                                                            
                                                     
                        
                                                
                        
                        
                            hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitary 
                                                            
                                                     
                        
                                                
                        
                        
                            Thyroid-releasing Hormone.