(About author:Meng Guolu, chief physician, graduate supervisor, vice chairman of the Youth Committee of the Cancer Branch of the Chinese Medical Doctor Association, Beijing Science and Technology Rising Star.) He graduated from Peking University Medical College in 1996 and received his Ph.D. in Neurosurgery from Beijing Tiantan Hospital affiliated to Capital Medical University in 2004. From 1996 to 2017, he worked at Beijing Tiantan Hospital, affiliated to Capital Medical University, where he served as a resident physician to chief physician. Since 2018, he has been working at the Pediatric Neurosurgery Center of Xuanwu Hospital of Capital Medical University. Clinic Monday morning, Wednesday morning. ）
Inside the human skull and spinal canal is the presence of water. We call this water cerebrospinal fluid.
For an adult, the total amount of cerebrospinal fluid is about 130 to 150 ml, the average daily production is about 500 ml, and the average produces 0.3-0.5 ml per minute.
Cerebrospinal fluid is constantly produced and absorbed, reaching a dynamic balance.
Why should there be water in the skull?
First of all, the water in the skull can play a supporting role for the brain and nerve tissue, and the brain tissue suspended in the water will be safer, which greatly reduces the gravity of the brain tissue; when the human body suffers trauma, it can play a certain protective role.
Secondly, it has a metabolic effect: cerebrospinal fluid can remove metabolites and inflammatory exudates, which is equivalent to the role of lymphatic fluid in other parts of the body.
Finally, cerebrospinal fluid has a nutritional effect: it can supply brain cells with certain nutrients and regulate the acid-base balance of the central nervous system.
There can be no cerebrospinal fluid in the skull, but if there is too much cerebrospinal fluid, it is hydrocephalus and needs to be treated.
Ventricular system