Topic/spec points:
8.1 Know the structure and function of sensory, relay and motor neurones including the role of Schwann
cells and myelination.
8.2 i) Understand how the nervous systems of organisms can cause effectors to respond to a stimulus.
ii) Understand how the pupil dilates and contracts.
Questions/Keywords/ Notes / diagrams:
definitions:
Describe and compare
the structures of motor,
sensory and relay
neurones
Relate their structure to
their individual functions
[e.g. motor neurones
attached to an effector
cell, size of the axon,
Dendron, cell body
location, etc.
Describe what Schwann
cells are made of, and
their link to myelination
Explain the role of
myelination in
transmission of impulses
and compare the speed of
transmission in a
myelinated Vs.
non-myelinated neurone
Explain the link between a
stimulus, Receptor,
Central Nervous System,
Effectors and response
Explain how the eye
respond to dim and bright
light to protect itself
including radial and
circular muscles changes
and the nerve pathways
in the brain
I can Draw a flow diagram
of the above pathway
Summary:
,Topic/spec points:
8.3 i) Understand how a nerve impulse (action potential) is conducted within an axon including changes in
membrane permeability to sodium and potassium ions
ii) and the role of the myelination in saltatory conduction along an axon
Questions/Keywords/ Notes / diagrams:
definitions:
Draw a graph showing an
Action Potential
Label each stage and
describe what is occurring
in terms of charges
across the membrane
during and at the end of
each
State how a resting
potential is reset after
hyperpolarisation
Explain the importance of
the refractory period
Explain what a wave of
depolarisation along the
axon is
Describe why the action
Potential only occurs at
the Nodes of Ranvier
within a neurone and how
these are adapted for
Saltatory Conduction
Explain the All or nothing
Principle of impulse
Transmission and link to
the “Summation of stimuli
Summary:
, Topic/spec points:
8.4 Know the structure and function of synapses in nerve impulse transmission, including the role of
neurotransmitters, including acetylcholine.
Questions/Keywords/ Notes / diagrams:
definitions:
Draw a diagram with all
the structures of a
synapse and the function
of each part
Explain how an action
Potential is transmitted
across a synapse
Explain why impulses
across synapses are
always unidirectional
Explain the difference
between spatial and
temporal summation in
the transmission of
Impulses
Distinguish between
Excitatory and inhibitory
neurotransmitters
Summary:
8.1 Know the structure and function of sensory, relay and motor neurones including the role of Schwann
cells and myelination.
8.2 i) Understand how the nervous systems of organisms can cause effectors to respond to a stimulus.
ii) Understand how the pupil dilates and contracts.
Questions/Keywords/ Notes / diagrams:
definitions:
Describe and compare
the structures of motor,
sensory and relay
neurones
Relate their structure to
their individual functions
[e.g. motor neurones
attached to an effector
cell, size of the axon,
Dendron, cell body
location, etc.
Describe what Schwann
cells are made of, and
their link to myelination
Explain the role of
myelination in
transmission of impulses
and compare the speed of
transmission in a
myelinated Vs.
non-myelinated neurone
Explain the link between a
stimulus, Receptor,
Central Nervous System,
Effectors and response
Explain how the eye
respond to dim and bright
light to protect itself
including radial and
circular muscles changes
and the nerve pathways
in the brain
I can Draw a flow diagram
of the above pathway
Summary:
,Topic/spec points:
8.3 i) Understand how a nerve impulse (action potential) is conducted within an axon including changes in
membrane permeability to sodium and potassium ions
ii) and the role of the myelination in saltatory conduction along an axon
Questions/Keywords/ Notes / diagrams:
definitions:
Draw a graph showing an
Action Potential
Label each stage and
describe what is occurring
in terms of charges
across the membrane
during and at the end of
each
State how a resting
potential is reset after
hyperpolarisation
Explain the importance of
the refractory period
Explain what a wave of
depolarisation along the
axon is
Describe why the action
Potential only occurs at
the Nodes of Ranvier
within a neurone and how
these are adapted for
Saltatory Conduction
Explain the All or nothing
Principle of impulse
Transmission and link to
the “Summation of stimuli
Summary:
, Topic/spec points:
8.4 Know the structure and function of synapses in nerve impulse transmission, including the role of
neurotransmitters, including acetylcholine.
Questions/Keywords/ Notes / diagrams:
definitions:
Draw a diagram with all
the structures of a
synapse and the function
of each part
Explain how an action
Potential is transmitted
across a synapse
Explain why impulses
across synapses are
always unidirectional
Explain the difference
between spatial and
temporal summation in
the transmission of
Impulses
Distinguish between
Excitatory and inhibitory
neurotransmitters
Summary:
