Mammary

... Muticelluar heterotrophs that use oxygen and can reproduce sexually. -Chordata: Notochords and nerve chords -Mammalia: middle ear bones, hair, mammary glands -Rodentia: specialized teeth -Sciuridae: skull structure -Tamias: pouched cheeks

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mammary glands in male human beings r said to be vestigial because they r functional in male prototherians{1st class in mammalia} like duck billed platypus and ecidna.they exhibt phenomenon called gyanaecomasticism

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Actually, if we go nitpicking here, mammary glands aren't completely inoperative in males, one could say that they are rather "dormant" - with proper hormonal treatment, certain men can even lactate. And like someone earlier said, ...

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It's not vestigial, it's just functional in only one gender. Males don't really have mammary glands - just nipples with pectoral muscles under them, and a fat-storage site.

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Hi, The mammary gland of male is said to be a vestigial organ. But it is a functional organ in female. So, my question is that how the mammary gland can be vestigial in male as vestigial organs are those that were functional before ...

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