Reflex Actions

Biology: Edexcel IGCSE, topic 3.5.8

Reflex Actions

Reflex actions allow us to respond to dangerous situations rapidly and automatically. Reflex actions do not involve conscious thought. The nervous system responds to stimuli (events or things) via a reflex arc. Some examples of reflexes are:

Blinking

Blinking

Sneezing

Sneezing

Dropping hot objects

Dropping hot objects

Test yourself on Reflex Actions

  • Which of the following is NOT an example of a reflex action?

  • How does the central nervous system respond to stimuli?

  • Why are reflex actions important?

Practise this topic for free