The medullary tube (tubus medullaris), also known as the medullary canal or spinal tube, is an anatomical structure that runs through the spinal cord and connects the brain to the spinal canal. It is made up of soft tissue known as the ependymal membrane and is about 1 mm thick.
The medullary tube plays an important role in maintaining the normal functioning of the spinal cord. It protects the spinal cord from damage and maintains its normal structure and function. It also serves to transport cerebrospinal fluid, which plays a role in the metabolism between the spinal cord and the rest of the body.
However, in some cases, the medullary tube can become damaged or inflamed, which can lead to various diseases and pathologies. For example, inflammation of the medial tube can lead to myelopathy, which is characterized by impaired sensation and motor activity in the lower extremities.
Overall, the medullary tube is an important anatomical structure that plays a key role in ensuring the normal functioning of the spinal cord and maintaining its health. However, its damage or inflammation can lead to serious health consequences and requires timely treatment.