Assertion: mammary gland | /r/HasProperty | part of the exocrine system
Facets:
Source sentences:
text: Mammary glands are part of the exocrine system, which is comprised of ducts such as the salivary gland (which secretes saliva) that secrete externally.
text: Sweat glands, saliva, and mammary glands are all parts of the exocrine system.