Only the glands of the endocrine system
A) use chemical signals to bring about changes in target organs.
B) work to regulate the activities of other body systems.
C) use the bloodstream to convey signals throughout the body.
D) help to maintain homeostasis.
E) bring about rapid responses by target organs.

Question

Quizplus · Accepted Answer

Endocrine glands secrete hormones directly into the bloodstream, allowing these chemical signals to be transported throughout the body to their specific target organs. This is a defining characteristic of how the endocrine system operates, distinguishing it from other signaling mechanisms in the body, such as the nervous system, which can induce rapid responses but does not use the bloodstream for signal transmission.

Only the Glands of the Endocrine System