There are two types of glands.Two salivary glands and pancreas.
You are probably referring to the accessory organs of digestion, and there are several. The liver, gallbladder, pancreas, and salivary glands.
There are far too many to mention, but would include the brain, lungs, kidneys, liver, etc. If you are asking about organs that are related to the digestive process, then you are probably referring to the accessory organs of digestion, and there are several. The liver, gallbladder, pancreas, and salivary glands are probably the major ones, though this list could also be endless if you consider the special senses.
Anus
Annelids
Technically, most named digestive enzymes and secretions are made by glands located outside of the "tube" of the gastrointestinal tract. For instance, the salivary glands are located between the muscles of the jaw and face, and secrete saliva into the mouth through salivary ducts. Bile is created by the liver, stored in the gallbladder and then secreted into the small intestine; pancreatic enzymes (there are a bunch of them) are made in the pancreas then secreted into the small intestine as well.
Stomach
Cellulose is digested by cellulase.It is not found in human.
There are a number of organs involved in excretion: the lower digestive tract including the colon, the kidneys, the lungs, and the sweat glands. The lower digestive tract removes or excretes indigestible items from the digestive tract. The kidneys remove urea which is a product of the breakdown of proteins. The lungs remove carbon dioxide which is also a waste product. And the sweat glands remove excess water.
The mouth contains the buccal mucosa-- which contains the openings of the salivary glands, the tongue, and the teeth.
Yes.
I think you are looking for liver and pancreas, these are accessory digestive organs that produce enzymes and emulsifiers that are secreted into the digestive tract.
GI tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The accessory digestive organs are the teeth, tongue, salivary glands, liver, gallbladder and pancreas.