Lesson 3.2.3.2.1
3.2.3.2.1 Sensory, relay and motor neurons; synaptic transmission Quiz: AQA Psychology, Unit 7
20 questions
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Lesson 3.2.3.2.1, Sensory, relay and motor neurons; synaptic transmission: 20 multiple choice questions for the AQA GCSE Psychology (8182), Unit 7: Brain and neuropsychology, written with Revision Ninja.
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The 20 questions
-
Which neuron type carries messages from sensory receptors towards the central nervous system?
- Motor neuron
- Relay neuron
- Sensory neuron
- Interneuron
-
Which type of neuron connects sensory neurons to motor neurons within the central nervous system?
- Relay neuron
- Sensory neuron
- Motor neuron
- Effector neuron
-
Which type of neuron carries electrical impulses from the central nervous system to effectors?
- Relay neuron
- Motor neuron
- Afferent neuron
- Sensory neuron
-
What type of messenger crosses the synaptic gap between two neurons?
- Hormonal signal
- Physical wave
- Chemical messenger
- Electrical impulse
-
What term describes neurotransmitters being reabsorbed back into the releasing neuron?
- Summation
- Reuptake
- Inhibition
- Excitation
-
What effect does a reuptake-inhibiting drug have on neurotransmitters in a synapse?
- Increases neurotransmitters
- Stops neurotransmitters
- Decreases neurotransmitters
- Has no effect
-
Which term describes a signal that increases the likelihood of a neuron firing?
- Excitation
- Inhibition
- Summation
- Reuptake
-
Which term describes a signal that decreases the likelihood of a neuron firing?
- Reuptake
- Excitation
- Inhibition
- Action potential
-
What is the main benefit of balancing excitatory and inhibitory signals?
- Constant electrical output
- Maximum firing rate
- Precise signal control
- Uncontrolled brain activity
-
Which part of a neuron receives incoming signals from other neurons?
- Axon terminal
- Myelin sheath
- Axon
- Dendrites
-
In what order do neurons pass a signal through a reflex arc?
- Motor, relay, sensory
- Sensory, relay, motor
- Relay, motor, sensory
- Sensory, motor, relay
-
What is the main function of a neurotransmitter in synaptic transmission?
- Producing cellular energy
- Insulating neuron axons
- Conducting electrical impulses
- Transmitting chemical signals
-
Where do motor neurons transfer signals to trigger muscle contraction?
- Spinal cord centre
- Sensory receptor
- Neuromuscular junction
- Dendritic spine
-
What is the primary function of the myelin sheath?
- Reabsorbing neurotransmitters
- Speeding up impulses
- Receiving chemical signals
- Generating electrical charges
-
What does the all-or-nothing principle of neuron firing mean?
- Variable impulse strength
- Gradual signal build-up
- Fixed impulse strength
- Continuous firing rate
-
Where are neurotransmitters released from during synaptic transmission?
- Myelin sheath
- Somatic membrane
- Postsynaptic neuron
- Presynaptic neuron
-
Where are neurotransmitter receptors located in a synapse?
- Axon hillock
- Myelin sheath
- Postsynaptic membrane
- Presynaptic membrane
-
What happens to a neuron's firing rate if its inhibitory receptors are blocked?
- Increased firing
- No change
- Decreased firing
- Complete blockage
-
Which type of neuron is most common in the central nervous system?
- Peripheral neuron
- Sensory neuron
- Motor neuron
- Relay neuron
-
What term describes the combining of multiple synaptic signals at a neuron?
- Reuptake
- Excitation
- Inhibition
- Summation
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