Assertion: endocrine system's hormone | /r/DefinedAs | chemical substances
Facets:
Source sentences:
text: Hormones may be defined as chemical substances that are secreted by endocrine cells into the extracellular fluids and regulate the metabolic activity of other cells in the body.
text: Hormones may be defined as chemical substances that are secreted by endocrine cells into the extracellular fluids and regulate the metabolic activity of other cells in the body.