Question

bio - 201l topic 2: tissues and integument
practice it
lo 2.3. ______ glands have secretions that leave through a duct that opens directly, or indirectly, to the external environment.
endocrine glands
exocrine
exocrine glands
salivary glands
sweat glands
sebaceous glands

Explanation:

Exocrine glands secrete substances through ducts to the external environment. Endocrine glands secrete hormones directly into the bloodstream. Salivary, sweat, and sebaceous glands are types of exocrine glands, but the general term 'exocrine glands' is the most appropriate answer here to match the description in the question.

Answer:

Exocrine glands