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| arranged by class or strata |
| small sacs or alveoli that terminate the ducts of some exocrine glands. lined with secretory cells |
duct (dŭkt)
n.
A tubular bodily canal or passage, especially one for carrying a glandular secretion such as bile.
| duct (dŭkt) Pronunciation Key
A tube or tubelike structure through which something flows, especially a tube in the body for carrying a fluid secreted that is by a gland. |