This is a fully-resourced lesson which covers the detail of point 5.1.3 (b) of the OCR A-level Biology A specification which states that students should be able to apply their understanding of the structures and functions of sensory, relay and motor neurones as well as the differences between myelinated and unmyelinated neurones. The PowerPoint has been designed to contain a wide range of activities that are interspersed between understanding and prior knowledge checks that allow the students to assess their progress on the current topics as well as challenge their ability to make links to topics from earlier in the modules. Quiz competitions like SAY WHAT YOU SEE are used to introduce key terms in a fun and memorable way.
The students will be able to compare these neurones based on their function but also distinguish between them based on their structural features. Time is taken to look at the importance of the myelin sheath for the sensory and motor neurones. Students will be introduced to the need for the entry of ions to cause depolarisation and will learn that this is only possible at the nodes of Ranvier when there is a myelin sheath. Key terminology such as saltatory conduction is introduced and explained. The final task involves a comparison between the three neurones to check that the students have understood the structures and functions of the neurones.
Throughout the lesson, links are made to the upcoming topic of the organisation of the nervous system (5.1.5) and students will be given additional knowledge such as the differences between somatic and autonomic motor neurones.
This lesson has been designed for students studying on the OCR A-level Biology A course.
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Homeostasis, Excretion, Neuronal and Hormonal communication (OCR A-level Biology A)
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Neuronal & hormonal communication (OCR A-level Biology)
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All of the lessons that are included in this bundle have been designed to ensure that all of the content in module 5.1.3 (neuronal communication) of the OCR A-level Biology A specification is covered. The wide range of activities and differentiated resources will motivate the students whilst the regular understanding and prior knowledge checks will allow them to assess their progress against the current topic as well as challenging them to make links to earlier topics. All of the specification points in module 5.1.3 have been covered by the following lessons: (a) The roles of mammalian sensory receptors (b) Sensory, relay and motor neurones and saltatory conduction (c)The generation and transmission of nerve impulses (d) The structure of cholinergic synapses (d) The role of synapses in summation and control
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