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Questions and Answers
Which type of signals does the nervous system use to propagate information?
Which type of signals does the nervous system use to propagate information?
- Chemical signals
- Electrical signals (correct)
- Thermal signals
- Mechanical signals
Who discovered the first evidence of electrical signals in neurons?
Who discovered the first evidence of electrical signals in neurons?
- Luigi Galvani (correct)
- Edgar Adrian
- Wenow
- The text does not mention a specific name
What is the membrane potential?
What is the membrane potential?
- The resting state of neurons
- The propagation of nerve impulses
- The distribution of positive and negative charges on each side of the membrane
- The electrical potential difference across the neuronal membrane (correct)
What happens to the membrane potential when neurons are excited?
What happens to the membrane potential when neurons are excited?
What do nerve impulses do?
What do nerve impulses do?
What did studies of muscle contraction in response to electrical stimulation of motor nerves suggest?
What did studies of muscle contraction in response to electrical stimulation of motor nerves suggest?
What type of neurons did Edgar Adrian and his co-workers measure nerve impulses from?
What type of neurons did Edgar Adrian and his co-workers measure nerve impulses from?
Which concept of modern neuroscience is described in the text?
Which concept of modern neuroscience is described in the text?
What is the purpose of synaptic potentials in most neurons?
What is the purpose of synaptic potentials in most neurons?
Where are synaptic potentials usually produced in a neuron?
Where are synaptic potentials usually produced in a neuron?
What determines the size of graded potentials?
What determines the size of graded potentials?
What is the main difference between action potentials and graded potentials?
What is the main difference between action potentials and graded potentials?
What happens at chemical synapses when action potentials arrive at the presynaptic terminals?
What happens at chemical synapses when action potentials arrive at the presynaptic terminals?
What is the role of neurotransmitters in synaptic transmission?
What is the role of neurotransmitters in synaptic transmission?
What is the purpose of action potentials in most neurons?
What is the purpose of action potentials in most neurons?
Which scientist first discovered the ability of an electric current to produce muscle twitches in frogs?
Which scientist first discovered the ability of an electric current to produce muscle twitches in frogs?
What is the role of sensory neurons mentioned in the text?
What is the role of sensory neurons mentioned in the text?
What is the primary function of amplifiers for electrical signals mentioned in the text?
What is the primary function of amplifiers for electrical signals mentioned in the text?
What is the physical basis of information flow within neurons?
What is the physical basis of information flow within neurons?
What is the function of nerve impulses in neurons?
What is the function of nerve impulses in neurons?
What is the distribution of positive and negative charges across the neuronal membrane called?
What is the distribution of positive and negative charges across the neuronal membrane called?
What is the resting state of neurons in terms of membrane potential?
What is the resting state of neurons in terms of membrane potential?
What is the purpose of synaptic potentials in most neurons?
What is the purpose of synaptic potentials in most neurons?
What is the purpose of action potentials in most neurons?
What is the purpose of action potentials in most neurons?
Where are synaptic potentials usually produced in a neuron?
Where are synaptic potentials usually produced in a neuron?
Which of the following is true about action potentials?
Which of the following is true about action potentials?
What is the main difference between action potentials and graded potentials?
What is the main difference between action potentials and graded potentials?
What is the purpose of synaptic potentials in most neurons?
What is the purpose of synaptic potentials in most neurons?
Where is the site of action potential initiation in most neurons?
Where is the site of action potential initiation in most neurons?
How is information transmitted between neurons at electrical synapses?
How is information transmitted between neurons at electrical synapses?
What happens at chemical synapses when action potentials arrive at the presynaptic terminals?
What happens at chemical synapses when action potentials arrive at the presynaptic terminals?
What is the role of graded potentials in non-spiking neurons?
What is the role of graded potentials in non-spiking neurons?
What are synaptic potentials usually produced at in a neuron?
What are synaptic potentials usually produced at in a neuron?
What determines the size of graded potentials?
What determines the size of graded potentials?
What do synaptic potentials in most neurons determine?
What do synaptic potentials in most neurons determine?
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