Assertion: endocrine system's gland | /r/HasProperty | tropic hormone
Facets:
Source sentences:
text: The signal for an endocrine gland to secrete more or less of its hormone is related to the concentration of some substance, either a hormone that influences the function of the gland (a tropic hormone), a biochemical product (e.g., glucose), or a biologically important element (e.g., calcium or potassium).