What are some of the obstacles sperm face as they travel through the female reproductive system?

well they have to get through the cooter without getting dissolved by acid or getting stuck in mucus. and they have to guess which tube they need to go into. then if they are luckys one nut will get to become child

Explanation:

the acidic pH of the vagina; the mucus micro-architecture of the cervix; the narrow uterotubal junction; the presence of phagocytosing leukocytes in the vagina, cervix and uterus

Explanation:

if you're asking what comes out, it's steam.