Reflex — Science definition
A fast involuntary response using a short route through the spinal cord, with the brain informed rather than consulted.
Where it is taught
- The Nervous System, Senses & Responses — Coordination, Defense & Reproduction, Life Science & Scientific Inquiry, Grade 7
In use
A reflex is the short route: receptor to spinal cord to muscle, with the brain informed rather than consulted.
The Nervous System, Senses & Responses
Questions using reflex
Problem 1
Why is “the brain never learns about a reflex” too strong?
Answer and explanation
A reflex can begin without conscious decision, while related information can still reach the brain.