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Afferent neurons (sensory neurons) carry impulses from sensory receptors to the CNS.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Sensory Organs - Ear - Structure and Physiology of Hearing and Balance
reflex actions represent a crucial and fascinating evolutionary adaptation. A reflex is a sudden, involuntary reaction to a potentially harmful stimulus. The specific pathway taken by the nerve impulses in a reflex action is called a reflex arc. Because the conscious thinking process of the brain is relatively slow and involves complex interactions of many millions of neurons, reflex arcs have evolved to facilitate immediate responses. If we were to consciously think about pulling a hand away from a hot object, we might get burnt before the thought process completes. Therefore, reflex arcs are
Ref: NCERT Class 10 Science chapter 6 control and coordination
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