where is the csf found in the spinal cord
Cerebrospinal fluid CSF occupies the subarachnoid space (between the arachnoid mater and the pia mater) and the ventricular system around and inside the brain and spinal cord. It fills the ventricles of the brain, cisterns, and sulci, as well as the central canal of the spinal cord. There is also a connection from the subarachnoid space to the bony labyrinth of the inner ear via the perilymphatic duct where the perilymph is continuous with the cerebrospinal fluid.
Grey matter Grey matter refers to unmyelinated neurons and other cells of the central nervous system. It is present in the brain, brainstem and cerebellum, and present throughout the spinal cord.
Cerebrospinal fluid CSF returns to the vascular system by entering the dural venous sinuses via arachnoid granulations.[2] These are outpouchings of the arachnoid mater into the venous sinuses around the brain, with valves to ensure one-way drainage.[2] This occurs because of a pressure difference between the arachnoid mater and venous sinuses.[3] CSF has also been seen to drain into lymphatic vessels,[17] particularly those surrounding the nose via drainage along the olfactory nerve through the cribriform plate. The pathway and extent are currently not known,[1] but may involve CSF flow along some cranial nerves and be more prominent in the neonate.[3] CSF turns over at a rate of three to four times a day.[2] CSF has also been seen to be reabsorbed through the sheathes of cranial and spinal nerve sheathes, and through the ependyma.[3]
Swallowing 5) Closure of the nasopharynx