Question

The external os is the

A) Uterine tube attachment site
B) Primary suspensory ligament for the uterus
C) Bone that supports the uterus during pregnancy
D) Opening of the cervix into the vagina
E) Inferior portion of the central cavity

Answer 1

The external os is the opening of the cervix into the vagina, which plays a critical role in reproduction and childbirth.

Step-by-step explanation:

The external os is D) Opening of the cervix into the vagina. The cervix is the lower part of the uterus that protrudes into the vagina and includes an opening known as the external os. The cervix plays a crucial role in the female reproductive system, not only acting as the passage through which sperm can enter the uterus from the vagina but also serving as the birth canal during labor. Its ability to produce mucus secretions that change consistency under hormonal influence is vital for both protecting the uterus from infections and facilitating the movement of sperm.