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  • IGCSE Biology - 2j Coordination and Response - Humans

IGCSE Biology - 2j Coordination and Response - Humans

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New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019


Section 2j Coordination and Response - Humans


  • 2.80 understand how organisms are able to respond to changes in their environment
  • 2.81 understand that homeostasis is the maintenance of a constant internal environment, and that body water content and body temperature are both examples of homeostasis
  • 2.82 understand that a co-ordinated response requires a stimulus, a receptor and an effector
  • 2.86 describe how nervous and hormonal communication control responses and understand the differences between the two systems
  • 2.87 understand that the central nervous system consists of the brain and spinal cord and is linked to sense organs by nerves
  • 2.88 understand that stimulation of receptors in the sense organs sends electrical impulses along nerves into and out of the central nervous system, resulting in rapid responses
  • 2.89 understand the role of neurotransmitters at synapses
  • 2.90 describe the structure and functioning of a simple reflex arc illustrated by the withdrawal of a finger from a hot object
  • 2.91 describe the structure and function of the eye as a receptor
  • 2.92 understand the function of the eye in focusing on near and distant objects, and in responding to changes in light intensity
  • 2.93 describe the role of the skin in temperature regulation, with reference to sweating, vasoconstriction and vasodilation
  • 2.94 understand the sources, roles and effects of the following hormones: adrenaline, insulin, testosterone, progesterone and oestrogen
  • 2.95B understand the sources, roles and effects of the following hormones: ADH, FSH and LH


New and updated resource for IGCSE 9-1- More practical pages, updated design, concept checker and exam style question for each topic.

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  • Home
  • Revision Courses
  • GCSE (9-1)
    • Topic 9
  • IGCSE (9-1)
    • 1 The nature and variety of living organisms
    • 2 Structures and functions in living organisms
    • 3 Reproduction and inheritance
    • 4 Ecology and the environment
    • 5 Uses of biological resources
    • IGCSE Revision Resources
  • Pre-U
    • 1 The Cell
    • 2 The Origin and Evolution of Life
    • 4 The Life of Plants
  • A Level
  • IB
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  • Blog
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