CSF circulates through the ventricles of the brain, subarachnoid space and central canal of the spinal cord. It is formed by the choroid plexuses inside the ventricles and helps protect the brain and spinal cord. A lumbar puncture, or spinal tap, is a procedure that involves inserting a needle into the subarachnoid space to collect a sample of CSF for analysis.

1. CSF & LP
CEREBROSPINAL FLUID & LUMBAR PUNCTURE
Dr.Suhail Ahmad

2. INTRODUCTION
Cerebrospinal fluid ( CSF) is a
clear, colorless and transparent
fluid that circulates through
ventricles of brain, subarachnoid
space and central canal of spinal
cord.
It is the part of extra cellular
fluid (ECF).
It is formed by choroid plexuses,
which are tuft of capillaries
present inside the ventricles.

4. CIRCULATION