The mucosa of the cervical canal (endocervix) is composed of a single layer of mucin-secreting columnar epithelium, which lines both the surface and the underlying glandular crypts. Isolated neuroendocrine epithelial cells of argentaffin type or argyrophil type are admixed with the normal endocervical cells.
Air travel Pregnant travellers can normally travel safely by air. In the absence of medical or obstetrical complications, pregnant women can safely fly up to 36 weeks gestation. Most airlines restrict travel in late pregnancy or may require a written confirmation from a physician.
There are many reasons why a pregnant woman may need or want to travel by plane during pregnancy: business, vacation, family visits, holidays, emergencies, and more. It is important to know the ins and outs of airline travel when pregnant to help protect the safety and comfort of women and their unborn babies.