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The mammary gland of the cow takes on added significance due to the importance of milk as a human food source.
== General Structure ==
* Mammary gland comprises four mammary complexes, which are separate units, consolidated in a single mass - the udder.
** '''Udder''' hangs from the caudal abdomen and pelvis.
*** '''Quarters''': all four parts of the bovine udder, each associated with one teat. All four quarters are completely separated from each other.
* '''Accessory teats''', sometimes associated with functional glandular tissue common.
** Undesirable, may complicate milking if fused or too close to principle teats.
== Appearance ==
* Varies greatly with breed.
== Blood Supply ==