Hormones are Intercellular Chemical Signals That

Question

Hormones are intercellular chemical signals that
A) are secreted into the external environment where they act.
B) affect only non-hormone producing organs or tissues.
C) help coordinate growth, development and reproduction.
D) operate primarily by positive feedback.

Accepted Answer

Hormones help coordinate growth, development, and reproduction by signaling between cells and organs to regulate functions such as metabolism, reproduction, and the immune system. They are secreted by specialized cells in endocrine glands and transported through the bloodstream to target cells where they elicit a response. Hormones can also have a negative feedback loop to regulate levels in the body.