The nervous system

B1a.1a The nervous system

Name C lass Date

1 Cut out the labels showing the jobs of the parts of the nervous system and stick them in the correct place on the diagram.

spinal cord

relay neurone

sensory neurone

brain

motor neurone

sense organ

effector

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Takes impulses from the sense organ to the relay neurone. Takes impulses to the brain and from the brain. Takes impulses from the relay neurone to the effector. Receives impulses from the spinal cord and sends out new impulses. Senses stimuli from our surroundings. The muscle that receives the impulse from motor neurone. Where the relay neurones are found.

B1a.1a The nervous system (continued)

2 Write down the path of the impulse from when the athlete hears a starting pistol to when they respond.

stimulus = shot

brain

muscles move

3 Reflexes are automatic actions that we cannot control. They are used to protect our body from injury. Complete the table below by filling in the missing boxes.

Reflex Protection given

to eye

stops us from choking Sneezing

Pupil in the eye shrinks

4 Professional tennis players can serve a ball at more than 55 m/s. If the length of a tennis court is 37 m how much time does the other player have to try

reaction time =distance speed

and hit the ball? Use this equation to help you: = seconds

= ___________ seconds

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© Pearson Education Limited 2006 AQA GCSE Science Copymaster File 5