GENERAL HISTOLOGY

Detailed explanation-1: -The lower, narrow end of the uterus that forms a canal between the uterus and vagina.

Detailed explanation-2: -The lower part of the uterus connects to the vagina and is called the cervix. The wider, upper part of the uterus is called the corpus or fundus.

Detailed explanation-3: -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-4: -The lower end of the cervix bulges through the anterior wall of the vagina, and is referred to as the vaginal portion of cervix (or ectocervix) while the rest of the cervix above the vagina is called the supravaginal portion of cervix.

Detailed explanation-5: -The lower narrow part of the uterus is cervix.