Which of the Following Is TRUE of the Endocrine System

Which of the following is TRUE of the endocrine system?

A) Adrenocorticotropic hormone (ACTH) stimulates the action of part of the thyroid gland.
B) The islets of Langerhans produce insulin,glucagon,and thyroxine.
C) Endocrine glands of the body have tubes that carry their secretions from the producing gland to other parts or organs of the body.
D) Endocrine secretions go directly into the bloodstream,which carries them to other parts of the body.

Correct Answer:

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