Fallopian tube. Coloured scanning electron micrograph (SEM) of a cross-section through a fallopian tube (oviduct). The fallopian tubes carry the egg from the ovary to the uterus (womb). The interior (lumen) of the tube is lined with a folded mucous membrane, which is surrounded by a thin layer of muscle. The outer layer, the serosa, consists of connective tissue and is highly vascular. Magnification: x11 when printed 10 centimetres wide.