| 释义 |
EncyclopediaSeemammary ridgemammary crests
mammary crestsbandlike ectodermal thickenings in embryos extending on either side from the bases of the limb buds; in human embryos, the crests are most obvious over the thoracic region where they form the breast primordia; the remainder of the crests normally disappear. Synonym(s): mammary fold, mammary ridge, milk line, milk ridge |