Reflex actions

Cards (7)

Catching a ruler is an example of...?
A voluntary response.
What controls the reaction of catching a ruler?
The brain
What do we call reactions that happen without us thinking about them first?
Reflex actions
What is a reflex action?
A reflex action is a fast, automatic and protective response to a stimulus.
Name 3 examples of reflexes.
- Knee jerk reaction
- Pupil reflex
- Withdrawing hand from a hot plate
What are reflex arcs?
Reflex arcs reduce the time between detecting a stimulus and responding to it.
Why are reflexes so fast?
The information from the stimulus is not sent to the brain to process first before the effector is activated.