Also called the throat, the pharynx is the portion of the digestive tract that receives the food from your mouth. Branching off the pharynx is the esophagus, which carries food to the stomach, and the trachea or windpipe, which carries air to the lungs.
People also ask, what is the lining of the digestive tract called?
The digestive system is a series of hollow organs joined in a long, twisting tube from the mouth to the anus (see Figure 1). Inside this tube is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food.
What type of tissue is the lining of the digestive system?
Depending on the section of the digestive tract, it protects the digestive tract wall, secretes substances, and absorbs the end products of digestion. It is composed of three layers: The epithelium is the innermost layer of the mucosa. It is composed of simple columnar epithelium or stratified squamous epithelium.
What are the 4 layers of the gastrointestinal wall?
The GI tract contains four layers: the innermost layer is the mucosa, underneath this is the submucosa, followed by the muscularis propria and finally, the outermost layer - the adventitia. The structure of these layers varies, in different regions of the digestive system, depending on their function.