Reflex arcs

This lesson is focusing on the structure and function of reflex arcs, looking at specific examples of reflex actions and applying this to extended writing exam questions.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Select the missing word from the options below to complete the flow chart: Stimulus → receptor → coordinator → ____________ → response

1/6

Q2.What does CNS stand for?

2/6

Q3.Which part of the neurone detects an incoming electrical impulse?

3/6

Q4.What is the name of the gap between two neurones?

4/6

Q5.Which of the below is not part of the peripheral nervous system (PNS)?

5/6

Q6.Select the correct order of neurones responding to a stimulus.

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Select the missing word from the options below to complete the flow chart: Stimulus → receptor → coordinator → ____________ → response

1/6

Q2.What does CNS stand for?

2/6

Q3.Which part of the neurone detects an incoming electrical impulse?

3/6

Q4.What is the name of the gap between two neurones?

4/6

Q5.Which of the below is not part of the peripheral nervous system (PNS)?

5/6

Q6.Select the correct order of neurones responding to a stimulus.

6/6

Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

  • Click "Close Video"
  • Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Reflex Arcs

This is a multiple choice quiz assessing your knowledge of reflex arcs, synapses and nervous response.

Q1.What are cells that are sensitive to stimuli called?

1/5

Q2.What is the name of the neurone that transfers the electrical impulse from the relay neurone to the effector?

2/5

Q3.Why do the electrical impulses in a reflex action travel via the spinal cord and not the brain?

3/5

Q4.A student touches a hot light bulb. They pull their hand back quickly. What is the receptor in this response?

4/5

Q5.A student touches a hot light bulb. They pull their hand back quickly. What is the effector in this response?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Reflex Arcs

This is a multiple choice quiz assessing your knowledge of reflex arcs, synapses and nervous response.

Q1.What are cells that are sensitive to stimuli called?

1/5

Q2.What is the name of the neurone that transfers the electrical impulse from the relay neurone to the effector?

2/5

Q3.Why do the electrical impulses in a reflex action travel via the spinal cord and not the brain?

3/5

Q4.A student touches a hot light bulb. They pull their hand back quickly. What is the receptor in this response?

4/5

Q5.A student touches a hot light bulb. They pull their hand back quickly. What is the effector in this response?

5/5

Lesson summary: Reflex arcs

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Time to move!

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For 5 mins...

Move around:
Climb stairs

On the spot:
Dance