Arachnoid Mater of the Brain

This short video describes the arachnoid mater of the brain. The video starts with the introduction and location of the arachnoid mater. The sub-arachnoid space is also highlighted. The arachnoid cisterns, in general, are elaborated, with emphasis on the largest arachnoid cistern i.e., cisterna magna. The lower extension of the arachnoid mater outside the spinal cord is also described. The functioning of arachnoid granulation is elucidated and the clinical relevance at the end of the video discusses the effect of increased CSF in sub arachnoid space. 0:03 Introduction 0:20 Sub-arachnoid space 0:36 Arachnoid cisterns 0:46 Cisterna magna 1:21 Arachnoid granulations 1:46 Clinical correlation