Pearson Edexcel IAL Biology 8.3 Spinal reflex arc
Practise tracing spinal reflex arcs from receptors to the spinal cord and muscle, including sensory, relay and motor neurones.
- Syllabus
- First assessment 2019
- Course
- Biology YBI11
- Level
- A2
Exam points
- describe the impulse route from skin receptor through sensory neurone to spinal cord
- distinguish relay neurone location in grey matter from sensory cell body position
- select the correct reflex pathway linking receptor, spinal cord and muscle
8.3—Spinal reflex arc question 1
Whales are large mammals.
The photograph shows a beluga whale and a human diver.
A beluga whale can respond to a stimulus using a spinal reflex arc.
Which row is correct?
Location of relay neurone
Location of cell body on
the sensory neurone
grey matter of spinal cord
at the end of the axon
grey matter of spinal cord
in the middle of the axon
white matter of spinal cord
at the end of the axon
white matter of spinal cord
in the middle of the axon
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