The capillaries of what reabsorb cerebral spinal fluid?

Answer 1

Cerebrospinal fluid (CSF) is resorbed via the arachnoid villi and granulations within the subarachnoid space would be, I think, the best answer. Arachnoid fibers extend down within the subarachnoid space to attach to the pia mater. However, according to Afifi et al, in Functional Neuroanatomy, although arachnoid fibers appear to constitute the primarysites for CSF resorption, alternative sites can include: adventitia of leptomeningeal blood vessels, cranial and spinal nerve root sleeves, capillary endothelium, choroid plexus, leptomeningeal vessels, perineural sheaths of cranial and spinal nerves, and, ependyma of the ventricles. Patricia Murphy, SPTA Kalamazoo MI