Endocrine glands differ from exocrine glands because ________.
A. exocrine glands are made using cuboidal and columnar epithelia, while endocrine glands are not
B. endocrine glands are widespread in the body, while exocrine glands are only found near the body surface
C. exocrine glands have a duct to carry their secretions, while endocrine glands do not
D. exocrine glands produce hormones, while endocrine glands do not
Answer: C. exocrine glands have a duct to carry their secretions, while endocrine glands do not
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