ترجمه مقاله نقش ضروری ارتباطات 6G با چشم انداز صنعت 4.0
- مبلغ: ۸۶,۰۰۰ تومان
ترجمه مقاله پایداری توسعه شهری، تعدیل ساختار صنعتی و کارایی کاربری زمین
- مبلغ: ۹۱,۰۰۰ تومان
The human brain is a delicate organ that is surrounded by the rigid skull. The effective weight of the brain is reduced from 1,500 to 50 g by being submerged in the cerebrospinal fluid (CSF). This helps reduce the risk of mechanical injury to the brain parenchyma and cerebral blood vessels (51). The CSF is constantly secreted and thus displaces older fluid, which drains into the systemic circulation via the dural sinuses. This creates a flow of fluid through the ventricular system, which is important in maintaining a stable environment within the brain. The flow of CSF also assists in the removal of waste products from the central nervous system, e.g., excess neurotransmitters (43), debris from the surface lining epithelium, bacteria, and viruses (22).