What role do heat receptors of skin play at the beginning of a reflex action in humans?
Answer and explanation
Correct answer: They detect the heat stimulus and initiate a nerve signal
A reflex action begins when a receptor detects a potentially harmful stimulus. Heat or pain receptors in the skin sense excessive temperature and convert that stimulus into a nerve impulse. The impulse travels through a sensory neuron to the spinal cord, which coordinates a rapid response through a motor neuron. Therefore option A correctly describes the first step; the other options are unrelated functions.
Frequently asked questions
What is the correct answer to this question?
They detect the heat stimulus and initiate a nerve signal
Why is this the correct answer?
A reflex action begins when a receptor detects a potentially harmful stimulus. Heat or pain receptors in the skin sense excessive temperature and convert that stimulus into a nerve impulse. The impulse travels through a sensory neuron to the spinal cord, which coordinates a rapid response through a motor neuron. Therefore option A correctly describes the first step; the other options are unrelated functions.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Reflex action.
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