Podcast
Questions and Answers
What ion channels are primarily responsible for maintaining the resting membrane potential in neurons?
What ion channels are primarily responsible for maintaining the resting membrane potential in neurons?
potassium channels
What is the primary reason sodium ions cannot diffuse through the membrane in a resting nerve cell?
What is the primary reason sodium ions cannot diffuse through the membrane in a resting nerve cell?
sodium channels are closed
What is the threshold value for an electrical stimulus to produce an action potential?
What is the threshold value for an electrical stimulus to produce an action potential?
-50 mV
What occurs during the first stage of an action potential?
What occurs during the first stage of an action potential?
What is the result of applying a weak stimulus to an axon?
What is the result of applying a weak stimulus to an axon?
What process occurs during the final phase of an action potential?
What process occurs during the final phase of an action potential?
What is the function of the myelin sheaths in myelinated neurons?
What is the function of the myelin sheaths in myelinated neurons?
What is the purpose of the lipid bilayer in the plasma membrane of an axon?
What is the purpose of the lipid bilayer in the plasma membrane of an axon?
How do unmyelinated neurons transmit nerve impulses compared to myelinated neurons?
How do unmyelinated neurons transmit nerve impulses compared to myelinated neurons?
What components of an electrical circuit are similar to the axon's function?
What components of an electrical circuit are similar to the axon's function?
What is the role of synapses in a neuron?
What is the role of synapses in a neuron?
What is the function of the axoplasm in the axon?
What is the function of the axoplasm in the axon?
What is the role of myelin in the conduction of action potentials along an axon?
What is the role of myelin in the conduction of action potentials along an axon?
What happens to the conduction of an action potential in unmyelinated axons?
What happens to the conduction of an action potential in unmyelinated axons?
What is the function of the node of Ranvier in action potential conduction?
What is the function of the node of Ranvier in action potential conduction?
How do Schwann cells contribute to the formation of the myelin sheath?
How do Schwann cells contribute to the formation of the myelin sheath?
What is the importance of the resistance of the axon to current in action potential conduction?
What is the importance of the resistance of the axon to current in action potential conduction?
What is the relationship between the myelin sheath and the propagation of action potentials?
What is the relationship between the myelin sheath and the propagation of action potentials?
