The nerve fibres transmitting impulses from tissues/organs to the CNS is:
afferent nerve fibres.
— Concept: This question tests your understanding of the basic classification of nerve fibres based on the direction of…Concept: This question tests your understanding of the basic classification of nerve fibres based on the direction of impulse transmission in the nervous system.
Why (C) is correct: Afferent nerve fibres (also known as sensory nerve fibres) are responsible for transmitting nerve impulses from tissues and organs (receptors) to the Central Nervous System (CNS). This allows the CNS to receive information about the body's internal and external environment.
Why other options are wrong:
- (A) efferent nerve fibres: These transmit impulses from the CNS to effector organs (muscles, glands).
- (B) mixed nerve fibres: These contain both afferent (sensory) and efferent (motor) fibres.
- (D) all of these: This is incorrect as only afferent fibres perform the specified function.
Common Mistake: Students often confuse afferent and efferent. Remember 'A' for 'Arriving' at the CNS and 'E' for 'Exiting' the CNS.
NEET Tip / Mnemonic: Afferent = Arriving (at CNS); Efferent = Exiting (from CNS).
Correct Answer: (C)
afferent nerve fibres.