Lesson 8.1.1
8.1.1 Sensory, relay and motor neurones and responses to stimuli Quiz: Pearson Edexcel Biology, Unit 8
20 questions
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Lesson 8.1.1, Sensory, relay and motor neurones and responses to stimuli: 20 multiple choice questions for the Pearson Edexcel Biology (9BI0), Unit 8: Grey Matter, written with Revision Ninja.
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The 20 questions
-
Which type of neurone carries nerve impulses from receptors to the central nervous system?
- Oligodendrocyte
- Sensory neurone
- Motor neurone
- Relay neurone
-
Which type of neurone carries impulses away from the central nervous system to effectors?
- Sensory neurone
- Relay neurone
- Bipolar neurone
- Motor neurone
-
Where are relay neurones located within the human nervous system?
- Central nervous system
- Somatic receptors
- Autonomic ganglia
- Peripheral nervous system
-
What is the main function of Schwann cells in peripheral neurones?
- Synthesising ATP
- Transmitting impulses
- Forming myelin sheath
- Secreting acetylcholine
-
Which part of a motor neurone contains the nucleus and organelles?
- Cell body
- Node of Ranvier
- Axon terminal
- Dendrite
-
What is the main function of dendrites in a neurone?
- Receiving nerve impulses
- Releasing neurotransmitters
- Insulating axons
- Synthesising myelin
-
What is the correct sequence of neurones in a spinal reflex arc?
- Sensory, motor, relay
- Motor, relay, sensory
- Sensory, relay, motor
- Relay, sensory, motor
-
What term describes a rapid, automatic response to a painful stimulus co-ordinated by the spinal cord?
- Voluntary action
- Conditioned response
- Hormonal feedback
- Involuntary reflex
-
Which component of a reflex arc carries out the physical response to a stimulus?
- Coordinator
- Effector
- Receptor
- Relay neurone
-
What process speeds up impulse transmission in myelinated neurones?
- Active transport
- Saltatory conduction
- Temporal summation
- Spatial summation
-
An impulse travels at 100 m s⁻¹ along a 1.2 m axon. How long does this travel take?
- 0.0012 s
- 120 s
- 0.12 s
- 0.012 s
-
What causes total reflex time to be longer than impulse conduction time alone?
- Myelin thickness
- Refractory period
- Axon resistance
- Synaptic delay
-
Why do reflex arcs with fewer synapses produce faster responses?
- Longer refractory periods
- Faster axon conduction
- Fewer synaptic delays
- Greater spatial summation
-
Where are the cell bodies of sensory neurones located?
- Cerebral cortex
- Dorsal root ganglia
- Ventral root ganglia
- Central nervous system
-
What is the term for the functional junction between two neurones?
- Axon hillock
- Myelin sheath
- Synapse
- Node of Ranvier
-
Which structure carries an electrical impulse towards the cell body in a sensory neurone?
- Long axon
- Synaptic knob
- Long dendron
- Short dendron
-
What is the primary effect of myelin sheath damage on motor neurones?
- Continuous hyperpolarisation
- Faster impulse conduction
- Slower impulse conduction
- Higher resting potential
-
Why is a reflex action described as involuntary?
- Requires conscious decision
- Bypasses conscious thought
- Controlled by cerebrum
- Uses voluntary muscles
-
An axon has five myelin sheaths along its length. How many nodes of Ranvier are between them?
- 5
- 4
- 6
- 2
-
Which neurone type has its cell body located on a side branch outside the CNS?
- Relay neurone
- Interneurone
- Sensory neurone
- Motor neurone
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