Mucous membranes consist of quite soft organic tissue and line the interior of certain organs as well as various naturally-occurring external cavities of the body
, such as the nostrils
. They can therefore be found along the entire length of the digestive tract, oesophagus, stomach, large intestine, colon
, and rectum
. Mucous membranes also line the lungs, elimination organs such as the bladder, and reproductive organs such as the endometrium
, the mucous
membrane that lines the uterus. These membranes are also located at the extremities of these organs, such as the mouth
, and the opening to the vagina
. Mucous membranes usually secrete a viscous substance, called mucous
, which makes them slightly moist and provides them with a protective barrier against various pathogens, such as viruses or bacteria.
Original article published by
. Translated by Jeff
Latest update on August 19, 2014 at 12:19 PM by christelle.b.