Podcast
Questions and Answers
Which structure is considered the basic unit of the nervous system?
Which structure is considered the basic unit of the nervous system?
- Cell body
- Neuron (correct)
- Axon
- Synapse
What is the function of the cell body in a neuron?
What is the function of the cell body in a neuron?
- Reception of electrical messages (correct)
- Interpretation of electrical messages
- Transmission of electrical messages
- None of the above
What is the resting membrane potential of a typical neuron?
What is the resting membrane potential of a typical neuron?
- 0 mV
- -30 to -50 mV
- -50 to -70 mV
- -70 to -90 mV (correct)
What is the main cause of the electrical potential difference across the neuron membrane?
What is the main cause of the electrical potential difference across the neuron membrane?
What happens when a strong stimulus is transmitted along the axon of a neuron?
What happens when a strong stimulus is transmitted along the axon of a neuron?
Which ions diffuse across the neuron membrane to produce a charge difference and hence a potential difference?
Which ions diffuse across the neuron membrane to produce a charge difference and hence a potential difference?
What is the range of the electrical potential difference across the neuron membrane?
What is the range of the electrical potential difference across the neuron membrane?
What is the term used to describe the excess of positive charge in the extracellular region and the excess of negative charge in the cytosol of a neuron?
What is the term used to describe the excess of positive charge in the extracellular region and the excess of negative charge in the cytosol of a neuron?
What is the net transfer of ions across the neuron membrane driven by?
What is the net transfer of ions across the neuron membrane driven by?
What is the function of the electrical force produced by the charge difference across the neuron membrane?
What is the function of the electrical force produced by the charge difference across the neuron membrane?
