"Pipe" usually implies high pressure, gas or liquid. "Duct" implies low pressure, usually air.Pipes are generally round and made in standard sizes. Ducts can be any shape, any size.
sweat glands :are small tubular structures of the skin that produce sweat. sweat duct :a small duct that conveys sweat from a sudoriferous gland to the surface of the skin.
Duct gland (often called exocrine gland) are glands that has a duct and secretes to their destination directly. Some examples are sweat glands and salivary glands.
Endocrine gland (sometimes called...
The "hepatic ducts" carry bile through the liver to the junction with the "cystic duct" (which flows both ways to the gall bladder). The final connection to the intestine is through the "common bile...
this involves the two chief kinds of glands ---endocrine glands and exocrine glands,endocrine glands release secretions into the blood where it doesn't need to pass to a tubelike or ducts,"in my own...