arachnoid
a fine, delicate membrane, the middle one of the three membranes or meninges that surround the brain and spinal cord, situated between the dura mater and the pia mater.
<span>The left side of the brain notices details, while the right side grasps the bigger picture. That's the answer for the question that you provided.</span>
ATP consists of three phosphates, a base (adenine) and a sugar (ribose).