- 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.
This key facts covers Key Facts within Reflex Arc for GCSE Biology. Topic 3: Reflex Arc It is section 2 of 15 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Reflex Arc
Which word best describes a reflex action?
State the correct order of the reflex arc pathway from stimulus to response. Name each component.
Quick recall flashcards
What is the reflex arc pathway?
Stimulus โ Receptor โ Sensory neurone โ Relay neurone (in spinal cord) โ Motor neurone โ Effector โ 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.