宫颈是子宫的门户,它保证只有持“钥匙”的(精子、月经、婴儿)才能通过,并阻挡外敌——细菌的入侵。宫颈里面充满黏液,黏液中藏着一条通往子宫的小路,它的开启只遵从身体自然的呼唤:在女性排卵期,宫颈黏液所含水分增加,通路变得比较宽阔,便于精子进入;非排卵期,或条件不宜时——如情绪低落、 The cervix is ​​the gateway to the uterus, which guarantees that only “keys” (sperm, menstruation, babies) can pass and block foreign enemies - the invasion of bacteria. Cervix full of mucus, mucus hidden in a path leading to the uterus, it’s only open to follow the call of the body naturally: in the female ovulation period, cervical mucus contains increased moisture, access becomes more broad, easy sperm access; non-ovulation Period, or when conditions are not appropriate - such as depression,