What is the cervix in vagina ?

The cervix is a dynamic sexual organ of the female reproductive system that connects the vagina with the uterine cavity.It is approximately 4 cm long with a diameter of approximately 3 cm and tends to be described as a cylindrical shape, although the front and back walls of the cervix are contiguous.

The size of the cervix changes throughout a woman’s life cycle. For example, during the fertile years of a woman’s reproductive cycle, females tend to have a larger cervix in comparison to postmenopausal females; Similarly, women who have had children have a larger cervix than women who have not had children.

In relation to the vagina, the part of the cervix that opens to the uterus is called the internal os and the opening of the cervix in the vagina is called the external os, while between is the conduit of the cervix, commonly referred to as the cervical canal.