Question detail
What role does the relay neurone play in a reflex arc?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The human nervous system
Question
- A. It detects the stimulus.
- B. It carries impulses to the effector.
- C. It connects sensory and motor neurones.
- D. It is the final output of the reflex action.
Answer
The correct option is It connects sensory and motor neurones.. This answer is correct because it matches the approved learning objective to describe a reflex arc using the sequence stimulus, receptor, sensory neurone, relay neurone, motor neurone and effector in the subtopic Structure and function.
Explanation
The correct option is It connects sensory and motor neurones.. It connects sensory and motor neurones. is correct because it directly supports the approved learning objective to describe a reflex arc using the sequence stimulus, receptor, sensory neurone, relay neurone, motor neurone and effector. This belongs to the subtopic Structure and function within The human nervous system, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Structure and function.
Common mistake
Misunderstanding the Reflex Arc Sequence
Students often confuse the order of components in a reflex arc, mistakenly placing the motor neurone before the relay neurone.
To fix this, students should memorize the correct sequence of the reflex arc: stimulus, receptor, sensory neurone, relay neurone, motor neurone, and effector. Visual aids or diagrams can help reinforce this order.
Related flashcards
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