If the sensory nerve is damaged, what will happen to reflex action after touching a hot object?
Answer and explanation
Correct answer: The stimulus message will not properly reach the spinal cord
The governing concept is the reflex arc. Receptors in the skin detect heat, and the sensory nerve carries that impulse to the spinal cord, which coordinates a rapid response through a motor nerve. If the sensory nerve is damaged, the impulse may not reach the spinal cord, so the withdrawal reflex becomes delayed, weak, or absent. The muscle cannot contract faster by itself, and the adrenal gland or plant roots are unrelated.
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What is the correct answer to this question?
The stimulus message will not properly reach the spinal cord
Why is this the correct answer?
The governing concept is the reflex arc. Receptors in the skin detect heat, and the sensory nerve carries that impulse to the spinal cord, which coordinates a rapid response through a motor nerve. If the sensory nerve is damaged, the impulse may not reach the spinal cord, so the withdrawal reflex becomes delayed, weak, or absent. The muscle cannot contract faster by itself, and the adrenal gland or plant roots are unrelated.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
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