pathogens, and physical trauma
# the regulation and exchange of chemicals between the underlying tissues and a body cavity
# the secretion of hormones into the circulatory system, as well as the secretion of sweat, mucus, enzymes, and other products that are delivered by ducts
# to provide sensation
# Absorb water and digested food in the lining of digestive canal.

Glandular tissue

Glandular

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