This is a highly-detailed and fully-resourced lesson which covers the detail of specification point 5.1.2 (d) of the OCR A-level Biology A specification which states that students should be able to demonstrate and apply an understanding of the roles of the hypothalamus, posterior pituitary, ADH and the collecting duct in the control of the water potential of the blood. Students learnt about the principles of homeostasis and negative feedback in an earlier module, so this lesson acts to build on that knowledge and challenges them to apply their knowledge. A wide range of activities have been included in the lesson to maintain motivation and engagement whilst the understanding and prior knowledge checks will allow the students to assess their progress as well as challenge themselves to make links to other Biology topics.
The lesson begins with a discussion about how the percentage of water in urine can and will change depending on the blood water potential. Students will quickly be introduced to osmoregulation and they will learn that the osmoreceptors and the osmoregulatory centre are found in the hypothalamus. A considerable amount of time is taken to study the cell signalling between the hypothalamus and the posterior pituitary gland by looking at the specialised neurones (neurosecretory cells). Links are made to the topics of neurones, nerve impulses and synapses and the students are challenged to recall the cell body, axon and vesicles. The main section of the lesson forms a detailed description of the body’s detection and response to a low blood water potential. The students are guided through this section as they are given 2 or 3 options for each stage and they have to use their knowledge to select the correct statement. The final task asks the students to write a detailed description for the opposite stimulus and this task is differentiated so those who need extra assistance can still access the work.
This lesson has been written for students studying on the OCR A-level Biology A course and ties in nicely with the other uploaded lessons in module 5.1.2 which include the structure of the nephron, ultrafiltration and selective reabsorption.
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5.1.2: Excretion as an example of homeostatic control (OCR A-level biology)
All 9 lessons included in this bundle are filled with a variety of tasks to maintain engagement whilst covering the detailed content of module 5.1.2 of the OCR A-level biology specification. There are also multiple understanding checks and prior knowledge checks, with answers embedded into the PowerPoint, which allow the students to assess their progress against the current topic and test their ability to make links to previously covered content. This module titled "Excretion as an example of homeostatic control", considers the removal of the products of cell metabolism and explores the role of the liver, kidneys (and skin) in this process. The functions of the liver and structure of the kidney lessons have been uploaded for free, so you could download these first if you would like to view the quality of this bundle. The specification points not directly covered by the lessons in this bundle are: (b) (ii) [c) (ii) [c] (iii) (f)
£16.50
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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
£24.00
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