The digestive system is made up of the gastrointestinal tract—also called the GI tract or digestive tract—and the liver, pancreas, and gallbladder. Food passes from the mouth (hence the tooth) to the stomach.
The wall of the stomach has four layers:
The mucosa is the inner layer (stomach lining). It contains glands that produce enzymes and acid, which help digest food.
The submucosa attaches the mucosa to the muscularis.
The muscularis is a layer of muscle. …
The serosa is a strong outer membrane which covers the stomach
tooth, plural teeth, any of the hard, resistant structures occurring on the jaws and in or around the mouth and pharynx areas of vertebrates. Teeth are used for catching and masticating food, for defense, and for other specialized purposes.
The digestive system is made up of the gastrointestinal tract—also called the GI tract or digestive tract—and the liver, pancreas, and gallbladder. Food passes from the mouth (hence the tooth) to the stomach.
The wall of the digestive tract has four layers or tunics:
Mucosa
Submucosa
Muscular layer
Serous layer or serosa
The wall of the stomach has four layers:
The mucosa is the inner layer (stomach lining). It contains glands that produce enzymes and acid, which help digest food.
The submucosa attaches the mucosa to the muscularis.
The muscularis is a layer of muscle. …
The serosa is a strong outer membrane which covers the stomach
tooth, plural teeth, any of the hard, resistant structures occurring on the jaws and in or around the mouth and pharynx areas of vertebrates. Teeth are used for catching and masticating food, for defense, and for other specialized purposes.