mammary ridge


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mammary ridge

[′mam·ə·rē ‚rij]
(embryology)
An ectodermal thickening forming a longitudinal elevation on the chest between the limbs from which the mammary glands develop.
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References in periodicals archive ?
Failure of any portion of the mammary ridge to involute can lead to ectopic breast tissue with (polythelia) or without (polymastia) a nipple/areolar complex.
DISCUSSION: Accessory nipple generally develops along the embryonic mammary ridge that extends from the axilla to the groin.
This results due to incomplete embryological regression of mammary ridges.