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Homeostasis & ResponseKey Facts

Key Facts

Part of Reflex Arc — GCSE Biology

This key facts covers Key Facts within Reflex Arc for GCSE Biology. Topic 3: Reflex Arc It is section 2 of 14 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 2 of 14

Practice

15 questions

Recall

20 flashcards

Key Facts

  • A reflex is a quick and involuntary movement in response to a stimulus.
  • The brain is bypassed in the case of reflexes, allowing for faster reaction times.
  • Reflexes involve a reflex arc pathway, which includes sensory receptors, nerve pathways, and effector muscles.

Keep building this topic

Read this section alongside the surrounding pages in Reflex Arc. That gives you the full topic sequence instead of a single isolated revision point.

Reflex Actions: Automatic ResponsesThe Reflex Arc PathwayRequired Practical: Measuring Reaction Time (RPA7)Comparing Reflex Actions

Practice Questions for Reflex Arc

Which word best describes a reflex action?

  • A. Voluntary
  • B. Involuntary
  • C. Conscious
  • D. Deliberate
1 markfoundation

State the correct order of the reflex arc pathway from stimulus to response. Name each component.

3 marksstandard

Quick Recall Flashcards

What is the reflex arc pathway?
Stimulus → Receptor → Sensory neurone → Relay neurone (in spinal cord) → Motor neurone → Effector → Response.
What is a reflex action?
A reflex is a rapid, automatic response to a stimulus that does not involve conscious thought. Reflexes protect the body from harm.

15 questions on Reflex Arc — practise free

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Reflex Actions: Automatic Responses

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The Reflex Arc Pathway