B1.2 The nervous system

Report
B1.2 The nervous system
GCSE items that can be used to define successful outcomes for
peer and self assessment activities
•
B1.2 The nervous system
Using Exam pro items to support successful
outcomes
Learners will be able to test their progress against learning
outcomes using questions taken from past AQA GCSE
examinations.
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B1.2 The Nervous System June 2012 BL1FPJune 12
The nervous system allows humans to react to their surroundings.
(a) Sense organs have receptors. Receptors detect changes in
the environment.
Which word describes a change in the environment?
Underline one answer.
an effector
a neurone
a stimulus
(1
mark)
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B1.2 The Nervous System June 2012 BL1FP
1 (b) The photograph shows a baby.
Labels A, B, C, D and E show some of the baby’s sense organs.
B
A
E
D
C
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B1.2 The Nervous System June 2012 BL??
Answer each question by writing one letter, A, B, C, D or E, in
each box.
1 (b) (i) Which sense organ has receptors sensitive to light?
(1 mark)
1 (b) (ii) Which two sense organs have receptors sensitive to
chemicals?
and
(2 marks)
1 (b) (iii) Which sense organ has receptors sensitive to
changes in the baby’s position?
(1 mark)
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B1.2 The Nervous System June 2012 BL1FP
1 (c) Information from sense organ A is passed along nerve cells.
The information is coordinated to produce a response.
Which organ in the body coordinates the information?
.............................................................................................................
.....................
(1
mark)
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Mark scheme
(a)
(b)(i)
(b)(ii)
(b)(iii)
(c)
a stimulus 1
A1
CD either order 2
E1
G brain allow spinal cord / CNS /
central nervous system
do not allow spine 1
Total 6
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B1.2 The Nervous System June 2012 BL1FPQ1
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B1.2 The Nervous System June 2012BL1HP
Higher
The diagram shows the nervous pathway used to coordinate
the knee-jerk reflex.
When the person is
hit at point P,
the lower leg is
suddenly raised.
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B1.2 The Nervous System June 2012BL1HP
(a) Name neurones A, B and C.
A
...............................................................................................................
.....
B
…………….............................................................................................
.........
C
...............................................................................................................
......
(3
marks)
(b) The receptor in the muscle in the leg is sensitive to a stimulus.
Suggest the stimulus.
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...............................................................................................................
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B1.2 The Nervous System June 2012BL1HP
(c) Describe what happens at the synapse during this reflex.
………………………………………………………………………
…………………………………
………………………………………………………………………
…………………………………
………………………………………………………………………
…………………………………
………………………………………………………………………
…………………………………
………………………………………………………………………
…………………………………
………………………………………………………………………
…………………………………
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(a)
B1.2 The Nervous System June 2012 Mark scheme
(c) any three from:
A sensory
1
chemical (release)
B motor
1
C relay
1
diffuses (across the gap /synapse) transmits
impulse /information (across synapse)between
neurones / nerve cells / namedaccept
neurotransmitter /acetylcholineallow transmits
signal / message
ignore nerve / neuron(e)
throughout
accept afferent
accept efferent
if named, must be either sensory /A to relay / C or
relay / C to motor/ B allow ‘to the next neurone’
accept intermediate
3
(b) stretch allow pressure / pull / tension (in
Total 7
muscle)
1
allow a hit at (point) P
ignore pain
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