英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

baculum    
阴茎骨

阴茎骨


请选择你想看的字典辞典：
单词字典翻译
baculum查看　baculum　在百度字典中的解释百度英翻中〔查看〕
baculum查看　baculum　在Google字典中的解释Google英翻中〔查看〕
baculum查看　baculum　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Baculum - Wikipedia
    Baculum Baculum of a dog's penis; the arrow shows the urethral sulcus, which is the groove in which the urethra lies 0:41 Fossil baculum of a bear (Indarctos) from the Miocene The baculum (pl : bacula), also known as the penis bone, penile bone, os penis, os genitale, [1] or os priapi, [2] is a bone in the penis of many placental mammals
  • Human Penis Bone Disappeared With Rise of Monogamy, Succinct Sex
    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
  • Why Humans Have No Penis Bone - Scientific American
    One of the most weird and wonderful products of evolution is the penis bone, or baculum The baculum is an extra-skeletal bone, which means it is not attached to the rest of the skeleton but
  • Humans have no penis bone because sex doesnt last long enough . . .
    Scientists have discovered why humans do not have a penis bone, unlike chimpanzees, bears and most other mammals The penis bone, or baculum, first evolved in mammals between 145 and 95 million
  • Why Don’t Humans Have a Baculum? A Scientific Answer
    The baculum, or os penis, is an extra-skeletal bone that provides rigidity and support during copulation, but it is entirely missing in Homo sapiens This anatomical difference is a significant evolutionary deviation from our closest primate relatives, such as chimpanzees and gorillas, who possess this bone
  • Why humans lost their penis bone - Science | AAAS
    Despite slang terms that imply otherwise, the human penis contains no bones The same cannot be said for many of our closest evolutionary relatives: Chimpanzees and bonobos both have penis bones (a macaque one is pictured), also known as bacula To find out why some primates have the feature whereas others don't, researchers traced the bone's evolutionary history through time The baculum
  • The Baculum was Gained and Lost Multiple Times during Mammalian . . .
    Through intensive literature review and phylogenetic analysis, we provide strong evidence that the baculum has been gained and lost multiple times and groups that evolved a baculum appear to have diversified more rapidly than groups without
  • Why don’t humans have a penis bone? - BBC Science Focus Magazine
    The penis bone or ‘baculum’ is common to lots of placental mammals but by no means all of them It seems to have evolved independently nine times in different mammal lineages but it has also subsequently been lost in many cases Among primates, humans are the only ones without a baculum
  • Baculum | Mammalian Skeleton, Rod-Shaped Bone, Penis Bone | Britannica
    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 Such wide distribution suggests that it appeared early in mammalian evolution
  • Why Don’t Humans Have a Baculum? A Scientific Answer
    The baculum, or penile bone, is an intriguing anatomical feature present in many male mammals Its widespread occurrence across diverse species often leads to a curious question: why do humans not possess this bone? The absence of a baculum in humans stands out as a unique characteristic within the mammalian kingdom, prompting scientific inquiry into its evolutionary history and the factors





中文字典-英文字典  2005-2009