Topic 4: Nerves

Explore ways of measuring reaction times

RULER TEST. Get someone to hold a ruler while you have your thumb and first finger on 0. Unexpectedly, let them drop the ruler and see what cm/mm you catch it on. Time this. This is your reaction time.

Reaction time is the ammount of time between hearing or seeing something and the first movement of your body. 

Describe the structure of the CNS (central nervous system)                 

  Describe the structure of the brain and explain how it carries electrical impulses from a sense organ to muscles

 There are four main areas in the brain:

• the cerebrum which controls memory, personality and conscious thought                                                        …