By the end of the lesson students should be able to:
- Describe a nerve impulse as an electrical signal
that passes along nerve cells called neurones
- Describe the human nervous system
- Identify motor (effector), relay (connector) and
sensory neurones from diagrams
- Describe a simple reflex arc in terms of
receptor, sensory neurone, relay neurone,
motor neurones and effector
- Describe a reflex action as a means of
automatically and rapidly integrating and coordinating stimuli with the responses of effectors (muscles and glands)
- Distinguish between voluntary and involuntary actions
- Define and describe a synapse
Introduction Watch this video!
Follow the instructions below and in a new post in your blog answer the questions.
1)Watch lessons 1 to 11 from this webpage .
a- Name the topics explained in the lessons
b- Look for pictures in the internet about the three types of neurones and outline their function.
c- Sketch a diagram to show the components in a reflex arc.
d- Search a short video which explains a synapse.
2) Play this interactive animation to study the structure of the brain and investigate «Stimulating the brain.
3) Complete the worksheet in the booklet.
4) Watch lessons 12-16 from this webpage
a- Give one example of antagonistic muscles.
b- State the difference between voluntary and involuntary actions.
5) «Measuring the reaction time»