Glands, such as the thyroid, that secrete their products directly into the blood rather than through ducts are classified as ________.
A) exocrine
B) endocrine
C) sebaceous
D) ceruminous
E) sudoriferous

Question

Quizplus · Accepted Answer

Glands that secrete their products directly into the blood are called endocrine glands. The thyroid gland is an example of an endocrine gland. Exocrine glands, on the other hand, secrete their products through ducts directly onto surfaces such as skin or into cavities of the body. Sebaceous, ceruminous, and sudoriferous glands are examples of exocrine glands.

Glands, Such as the Thyroid, That Secrete Their Products Directly