Which of the following statements is true concerning endocrine glands?
A) They are the same as target organs.
B) They empty their hormones directly onto a body surface.
C) They generally secrete their hormones into the bloodstream.
D) They usually have ducts.

Question

Quizplus · Accepted Answer

Endocrine glands secrete hormones into the bloodstream, rather than emptying them directly onto a body surface. They do not have ducts, which distinguishes them from exocrine glands. Target organs are the tissues or cells that respond to the hormonal signals produced by the endocrine gland.

Which of the Following Statements Is True Concerning Endocrine Glands