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BTEC Applied Science Unit 12 Assignment 2

Unit 12: Physiology of Human regulation & Reproduction – Assignment 2 Nervous system Task 1 1) Explain the organisation and function of the nervous system in relation to nerve impulses. Describe clearly how the body responds to a stimulus. Pick 1 reflex action and 1 conscious action from the list below: Reflex actions Standing on a nail Touching a hot plate Sunlight shining in your eyes Hearing a loud explosion Conscious actions Catching a pen before it drops from a desk Braking before you hit an animal running across the road Hearing a song you hate on the radio Describe how an impulse is generated and how the body responds using sensory, relay and motor nerves. Create a diagram for each stage of the reflex and conscious actions and emphasise how the organisation of neurones is beneficial to the function of a healthy nervous system. 2) Describe what is happening during an action potential and how nerve impulses are important as a control mechanism inside the body. You may use a series of diagrams to help you describe this. This provides evidence for P3 Task 2 Write a short report outlining the importance of the nervous system; you will need to briefly describe the central nervous system and how sympathetic and parasympathetic pathways dictate a person’s actions. Remember to discuss afferent (sensory) and efferent (motor) pathways. This provides evidence for M2 Exam board is Pearson ALL ASSIGNMENTS I HAVE UPLOADED ARE DISTINCTION GRADED.