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每個男人有射精管一對,由左右兩邊嘅輸精管跟精囊排泄管(Excretory duct of seminal vesicle)匯合而成,穿過前列腺並開口於尿道前列腺部。
射精管嘅開口好細,當精液連精子由輸精管同精囊抵達射精管時,精液就會溢出管口、迅速射入尿道並經條㞗離開人體;性交嘅快感亦喺發射時刻產生。
除咗男人,唔少雄性動物都有射精管,例如大田鱉。
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