what is the communication between The cervical canal and cavity of body of uterus ?
The cervical canal, i.e. the cavity of the cervix is fusiform in shape. It communicates above with the cavity of the body of the uterus, through the internal os, and below with the vaginal cavity through the external os. Ref : B D Chaurasia's Human Anatomy , Seventh edition , volume 2 , pg. no., 421.
internal os
external os
Right lateral os
left lateral os
Abdomen and pelvis