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14.1 Coordination and response

Syllabus
0610–2026–2027
Topic
14.1
Level
—

14.1.1—Electrical impulses travel along

  • State that electrical impulses travel along neurones

14.1.2—Mammalian nervous system

  • Describe the mammalian nervous system in terms of: (a) the central nervous system (CNS) consisting of the brain and the spinal cord (b) the peripheral nervous system (PNS) consisting of the nerves outside of the brain and spinal cord

14.1.3—Role of the nervous system

  • Describe the role of the nervous system as coordination and regulation of body functions

14.1.4—Sensory, relay and motor neurones

  • Identify in diagrams and images sensory, relay and motor neurones

14.1.5—Simple reflex arc in terms

  • Describe a simple reflex arc in terms of: receptor, sensory neurone, relay neurone, motor neurone and effector

14.1.6—Reflex action as a means

  • Describe a reflex action as a means of automatically and rapidly integrating and coordinating stimuli with the responses of effectors (muscles and glands)

14.1.7—Synapse as a junction between two

  • Describe a synapse as a junction between two neurones

14.1.8—Structure of a synapse

  • Describe the structure of a synapse, including the presence of vesicles containing neurotransmitter molecules, the synaptic gap and receptor proteins

14.1.9—Events at a synapse

  • Describe the events at a synapse as: (a) an impulse stimulates the release of neurotransmitter molecules from vesicles into the synaptic gap (b) the neurotransmitter molecules diffuse across the gap (c) neurotransmitter molecules bind with receptor proteins on the next neurone (d) an impulse is then stimulated in the next neurone

14.1.10—Synapses ensure that impulses travel

  • State that synapses ensure that impulses travel in one direction only

Objective notes

10 learning objectives
ConceptIGCSE Biology