Noun
endocervix (plural endocervixes or endocervices)
(anatomy) The mucous membrane of the cervical canal.
Simple columnar epithelium, typical of the endocervix, is visible on the right. Source: Internet
Practical aspects The endocervix may be partially sampled with the device used to obtain the ectocervical sample, but, due to the anatomy of this area, consistent and reliable sampling cannot be guaranteed. Source: Internet