This is a detailed lesson resource that covers the content of point 5.1.3 (a) of the OCR A-level Biology A specification which states that students should be able to demonstrate and apply their understanding of the roles of mammalian sensory receptors. There is a particular focus on the Pacinian corpuscle to demonstrate how these receptors act as transducers by converting one form of energy into electrical energy which is then conducted as an electrical impulse along the sensory neurone.
The lesson begins by looking at the different types of stimuli that can be detected. This leads into a written task where students have to form sentences to detail how thermoreceptors, rods and cones, hair cells in the inner ear and vibration receptors in the cochlea convert different forms of energy into electrical energy. Students will be introduced to the term transducer and will be challenged to work out what these cells carry out by using their sentences. As stated above, students will meet a Pacinian corpuscle and learn that this receptors detects pressure changes in the skin using the concentric rings of connective tissue in its structure. The rest of the lesson focuses on how ions are involved in the maintenance of resting potential and then depolarisation. Time is taken to look into the key details of these two processes so students are confident with this topic when met again during a lesson on the generation of action potentials. All of the tasks are differentiated to allow students of different abilities to access the work. As well as understanding checks to allow the students to assess their progress against the current topic, there are also a number of prior knowledge checks on topics like inorganic ions and methods of movement.
This lesson has been designed for students studying the OCR A-level Biology course
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Homeostasis, Excretion, Neuronal and Hormonal communication (OCR A-level Biology A)
This bundle of 20 lessons covers the majority of the content that's included in modules 5.1.1 - 5.1.4 of the OCR A-level Biology A specification. All of the lessons are highly detailed and have been planned at length to ensure that they are filled with a wide range of tasks to engage and motivate the students whilst checking on their understanding. The following specification points are covered by the lessons in this bundle: 5.1.1: Communication and homeostasis * The communication between cells by cell signalling * The principle of homeostasis * The physiological and behavioural responses involved in temperature control in endotherms and ectotherms 5.1.2: Excretion as an example of homeostatic control * The functions of the mammalian liver * The gross structure and histology of the kidney * The processes of ultrafiltration and selective reabsorption * The control of the water potential of the blood * The effects of kidney failure and its potential treatments 5.1.3: Neuronal communication * The roles of mammalian sensory receptors in converting stimuli into nerve impulses * The structure and functions of sensory, relay and motor neurones * The generation and transmission of nerve impulses in mammals * The structures and roles of synapses in transmission 5.1.4: Hormonal communication * Endocrine communication by hormones * The structure and functions of the adrenal glands * The structure of the pancreas * The regulation of blood glucose concentration * The difference between diabetes mellitus type I and II * The potential treatments for diabetes mellitus It is estimated that it will take in excess of 2 months of allocated A-level teaching time to cover the detail included in these lessons If you would like to sample the quality of the lessons in this bundle, then download the following lessons as they have been shared for free: * The principles of homeostasis * Temperature control in ectotherms * The functions of the liver * The structure of the kidney * The generation and transmission of nerve impulses * Endocrine communication
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Neuronal & hormonal communication (OCR A-level Biology)
This lesson bundle contains 10 lesson PowerPoints, which are highly detailed, and along with their accompanying resources have been designed to cover the content of modules 5.1.3 & 5.1.4 of the OCR A-level Biology A specification, titled neuronal communication and hormonal communication. Each lesson contains a wide range of tasks, that include exam-style questions with mark schemes written into the PowerPoint that students can use to assess their understanding of the current topic as well as previously covered topics. There are also differentiated tasks, discussion points and quick quiz competitions to introduce key values and terms in a fun and memorable way. This lesson bundle covers the following specification points in modules 5.1.3 & 5.1.4: * The roles of mammalian sensory receptors in converting different types of stimuli into nerve impulses * The structure and functions of sensory, motor and relay neurones * The generation and transmission of nerve impulses in mammals * The structure and roles of synapses in neurotransmission * Endocrine communication by hormones * The structure and functions of the adrenal glands * The histology of the pancreas * The regulation of blood glucose concentration * The differences between diabetes mellitus type I and II * The potential treatments for diabetes mellitus If you would like to sample the quality of the lessons in this bundle, then download the nerve impulse and endocrine communication lessons as these have been uploaded for free.
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Module 5.1.3: Neuronal communication (OCR A-level Biology A)
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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