Pick the odd-one out.
1. Nervous tissue : node of Ranvier
2. Ear: aqueduct of Sylvius
3. Bone : Volkman's canal
4. Eye: canal of Schlemm
Assertion : Cerebrospinal fluid is present throughout the central nervous system.
Reason : CSF has no such function.
Which of the following is the outermost mean of protection for brain?
(1) Skull
(2) Dura mater
(3) Arachnoid
(4) Pia mater
Which of the following is the outermost cranial meninges?
(1) Pia mater
(2) Dura mater
(3) Arachnoid
(4) Skull
Which of the following cranial meninges is in close contact of the brain tissue?
(1) Arachnoid
(2) Pia mater
(3) Dura mater
(4) Skull tissue