Because the contents of it is not injested
The body system in which mesentary belongs to can be considered both the digestive and the lymphatic system.
The rectum is part of the digestive system.
You should consider if inside of the digestive tract is made up of cells. organs or systems that have hollow tube such as mouth, respiratory tract, digestive system, and GI tract are considered external environment because it is connected to outside. You can think of more examples of the external environment in the body.
The body system that the colon belongs to is the digestive system. The colon is also known as the large intestine.
Food does not go 'Inside' of your digestive system. It remains 'Outside' of the digestive system. So most of the digestion is extracellular. So from mouth to anus the entire digestive system is connected to the 'Exterior' and is not technically and immunologically 'Inside' your body.
The digestive system digests food that goes into your body.
The taste buds would be considered part of the digestive system.
how dose the digestive system help body cells
The digestive system is really just a tube that begins at your mouth and ends at the rectum. Most of it is filled with bacteria compared to the other parts of your body which are usually sterile with no bacteria.
The digestive system does not work with the immune system to regulate body functions.
The digestive system is the system that makes food absorbable into the body
digestive is to digest but the digestive system is a system of digestion.