Final answer:
Progesterone is a female sex hormone that helps maintain a successful pregnancy. It plays a crucial role in the uterus and cervix, where it supports the uterine lining and facilitates sperm survival and transport through the production of cervical mucus.
Step-by-step explanation:
Progesterone is a female sex hormone that is secreted mainly by the ovaries. Its main function is to help maintain a successful pregnancy. Progesterone exerts its effects all over the body, but it has specific roles in the uterus and cervix. It helps maintain the uterine lining for potential implantation and supports the production of cervical mucus that is favorable for sperm survival and transport.