in a reflex action, impulses from a receptor cell travel along what kind of neurone first?
In a reflex action, impulses from a receptor cell first travel along a sensory neurone.
Quick Scoop: Reflex Arc Pathway
In a typical reflex arc (like quickly pulling your hand away from something hot), the sequence is:
- Receptor detects the stimulus.
- Impulse travels along a sensory neurone into the spinal cord or CNS.
- It then passes through a relay (interneuron) neurone.
- From there, it travels along a motor neurone to the effector (muscle or gland).
So for the exam-style question “in a reflex action, impulses from a receptor cell travel along what kind of neurone first?” , the correct one-word answer is:
Sensory neurone.
TL;DR: The first neurone in a reflex arc from the receptor is the sensory neurone.
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