Podcast
Questions and Answers
Which type of nerve fiber is covered with a fatty insulating layer called myelin?
Which type of nerve fiber is covered with a fatty insulating layer called myelin?
- Unmyelinated nerve fiber
- Axon
- Myelinated nerve fiber (correct)
- Neuron
What are the small un-insulated gaps called in an unmyelinated nerve fiber?
What are the small un-insulated gaps called in an unmyelinated nerve fiber?
- Myelin
- Neurons
- Nodes of Ranvier (correct)
- Axons
What are the two factors that affect the speed of propagation of the action potential?
What are the two factors that affect the speed of propagation of the action potential?
- Axons and neurons
- Membranes and core
- Resistance and capacitance (correct)
- Myelin and nodes of Ranvier
What happens to the propagation velocity if there is a decrease in resistance within the core of the membrane?
What happens to the propagation velocity if there is a decrease in resistance within the core of the membrane?
How does the charge stored in a myelinated section of a nerve fiber compare to that of an unmyelinated fiber of the same diameter?
How does the charge stored in a myelinated section of a nerve fiber compare to that of an unmyelinated fiber of the same diameter?
Which type of conduction occurs when the action potential jumps from one node to the next?
Which type of conduction occurs when the action potential jumps from one node to the next?
What is the propagation velocity of unmyelinated axons?
What is the propagation velocity of unmyelinated axons?
What is the time constant of a membrane determined by?
What is the time constant of a membrane determined by?
What is the velocity of conduction inversely related to?
What is the velocity of conduction inversely related to?
What is the record of the potentials from muscles during movement called?
What is the record of the potentials from muscles during movement called?
