Reaction time Required Practical ~ GCSE Biology Paper 2

Reaction time is a measure of how long it takes an organism to react to a stimulus. This uses your nervous system which is a system of receptors and neurones that send electrical impulses to and from your Central Nervous System. ⏱️TIMESTAMPS: 0:00 – Start 0:35 – How does the nervous system work? 1:30 – What are stimuli? 1:40 – What are receptors? 2:00 – What is the central nervous system? 2:17 – What are sensory neurones? 2:23 – What are nerves? 2:54 – What are motor neurones? 3:08 – What are effectors? 3:36 – Summary notes 1 3:39 – What are reflexes? 4:06 – What is a reflex arc? 4:57 – What is a synapse? 5:27 – What are relay neurones? 5:52 – Summary notes 2 5:56 – Reaction time required practical 6:05 – What is reaction time? 8:35 – How does caffeine affect reaction time? 9:35 – Improvements to the reaction time practical 10:03 – Explaining anomalous results in the reaction time experiment Questions of the week: https://drive.google.com/drive/folder... Answer from the last video: https://drive.google.com/drive/folder... Twitter & Instagram: @Uncle_Jegz Images from: https://pngtree.com/ https://pexels.com/ https://ib.bioninja.com.au/options/op... https://www.earthslab.com/physiology/... #unclejegz #reactiontime #requiredpractical