GENERAL HISTOLOGY

Detailed explanation-1: -Your cervix is a small canal that connects your uterus and vagina. It allows fluids to leave and enter your uterus. During childbirth, your cervix widens so that a baby can be born.

Detailed explanation-2: -An opening in the center of the ectocervix, known as the external os, opens to allow passage between the uterus and vagina. The endocervix, or endocervical canal, is a tunnel through the cervix, from the external os into the uterus.

Detailed explanation-3: -Summary. The cervical os is the opening in the cervix at each end of the endocervical canal. The external os is near the vagina, and the internal os is near the uterus. During your menstrual cycle, the cervical os opens more readily during ovulation to allow sperm to enter.

Detailed explanation-4: -The cervix is a fibromuscular organ that links the uterine cavity to the vagina. Although it is described as being cylindrical in shape, the anterior and posterior walls are more often ordinarily apposed. The cervix is approximately 4 cm in length and 3 cm in diameter.