Which of the meninges is a delicate connective tissue membrane that clings tightly to the brain like cellophane wrap following its every convolution? a) pia mater b) meningeal layer of the dura mater c) periosteal layer of the dura mater d) arachnoid mater.

The correct answer will be option- A

Explanation:

Meninges is the outer membranous layer of the brain which plays an important role in the brain. Meninges help protects the structure of the brain, acts as a supportive structure and protect the CNS from mechanical injuries.

The structure of the meninges in made up of three layers called:  

1. Dura mater: Tough outer layer present just underneath the skull which contains the vasculature of the brain. The dura mater contains two layers of connective tissue called: periosteal layer and meningeal layer.

2. Arachnoid Mater: Middle layer of the brain which is devoid of the vasculature.

3.  Pia mater: thin inner layer of the meninges which is tightly adhered to the contours of the brain.  

Thus, pia mater is the correct answer,

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).