After childbih, the external cervical os is:: (A) Regular, oval, (B) Transverse, (C) Longitudinal, (D) Irregular, oval
Answer is B. Before childbih, the external cervical os is a small, regular, oval opening. After childbih, the orifice is conveed into a transverse slit that is divided such that there are the so-called anterior and posterior lips of the cervix.