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baculum    
阴茎骨

阴茎骨


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  • Baculum - Wikipedia
    The baculum is an exclusive characteristic of placentals and closely related eutherians, being absent in other mammal clades, and it has been speculated to be derived from the epipubic bones more widely spread across mammals, but notoriously absent in placentals
  • Why Humans Have No Penis Bone - Scientific American
    The baculum is an extra-skeletal bone, which means it is not attached to the rest of the skeleton but instead floats daintily at the end of the penis
  • Human Penis Bone Disappeared With Rise of Monogamy, Succinct . . .
    Most mammals have a penis bone called a baculum, but humans don't A new study sheds light on the history of the baculum, and why ours is missing
  • Humans have no penis bone because sex doesnt last long . . .
    The penis bone, or baculum, first evolved in mammals between 145 and 95 million years ago, according to new research from University College London
  • Baculum | Mammalian Skeleton, Rod-Shaped Bone, Penis Bone . . .
    baculum, the penis bone of certain mammals The baculum is one of several heterotropic skeletal elements— i e , bones dissociated from the rest of the body skeleton It is found in all insectivores (e g , shrews, hedgehogs), bats, rodents, and carnivores and in all primates except humans
  • The Baculum was Gained and Lost Multiple Times during . . .
    The penis of many mammalian species contains a baculum, a bone that displays astonishing morphological diversity The evolution of baculum size and shape does not consistently correlate with any aspects of mating system, hindering our understanding of the evolutionary processes affecting it
  • The baculum: Current Biology - Cell Press
    What is a baculum? The baculum (os penis) is a bone found within the penis of certain mammals, including many primates, rodents, bats, carnivores, and some insectivores It is an isolated bone, derived from connective tissue and located at the distal end of the penis, above the urethra
  • Why humans lost their penis bone - Science | AAAS
    The baculum first evolved between 145 million and 95 million years ago, the team reports online today in the Proceedings of the Royal Society B That means it was present in the most recent common ancestor of all primates and carnivores
  • baculum - Wiktionary, the free dictionary
    The sexine usually consists of two main parts, a partially or wholly covering layer — the tectum (roof) and below that the rods or rod-like elements — the bacules (baculum, columella)
  • What is the baculum? Why do humans lack this strange . . .
    The baculum, also known as the penis penis, is a ubiquitous feature found in many mammals It is a hard bone located inside the penis of male animals and plays an important role in the mating process





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