I would like to help you by giving some tips which are dere in markschemes !
Stimulus or example ;
receptor / or described (R named sense organs) ;
impulse / electrical pulse AW ;
sensory neurone or sensory nerve cell (R nerve) ;
correct ref. To CNS for action described ;
relay / intermediate neurone or nerve cell (A ‘interneurone’) ;
motor or effector neurone or nerve cell ;
effector or described (muscle or gland) ;
correct response for stimulus given / named reflex
Stimulus or example ;
receptor / or described (R named sense organs) ;
impulse / electrical pulse AW ;
sensory neurone or sensory nerve cell (R nerve) ;
correct ref. To CNS for action described ;
relay / intermediate neurone or nerve cell (A ‘interneurone’) ;
motor or effector neurone or nerve cell ;
effector or described (muscle or gland) ;
correct response for stimulus given / named reflex