Beating Patterns of Mammalian Spermatozoa

2020 
This chapter discusses the beating patterns of mammalian spermatozoa, their changes occurring in both the male and female reproductive tracts, and factors that bring about these changes. Mammalian spermatozoa are suitable material for studying the basic and regulatory mechanisms of flagellar movement because they alter their beating patterns in both the male and female reproductive tracts. Different patterns of flagellar movement have been recognized among mammalian spermatozoa. Mammalian spermatozoa change their beating patterns in both the male and female reproductive tracts. The most dramatic change in beating patterns occurring in the female reproductive tract is hyperactivation. The plasma membrane plays an important role on initiating the hyperactivated motility, but the changes in beating pattern during hyperactivation must finally be based on the changes in flagellar axoneme. Hyperactivation can also be induced in artificial media in vitro.
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