Assertion (A): Arachnoid layer helps in speeding up the transmission of nerve impulses along the axons.
Reason (R): Axon endings at the synapse secrete acetylene.
(a) A is True and R is False
(b) A is False and R is True
(c) Both A and R are True
(d) Both A and R are False
(d) Both A and R are False
Explanation: The arachnoid is a meningeal membrane and does not speed impulse conduction; the myelin sheath performs that function. Axon terminals release acetylcholine, not acetylene.
More ICSE Moderate level questions
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