Podcast
Questions and Answers
Which type of neuron is characterized by having more than two extensions from the cell body?
Which type of neuron is characterized by having more than two extensions from the cell body?
- Bipolar Neuron
- Pseudounipolar Neuron
- Unipolar Neuron
- Multipolar Neuron (correct)
What is the primary function of the sodium-potassium pump?
What is the primary function of the sodium-potassium pump?
- To balance the concentrations of ions during an action potential
- To facilitate the influx of Na+ into the cell
- To maintain the higher concentration of K+ inside the cell (correct)
- To ensure the leakage of ions across the membrane is uniform
Which statement accurately describes the permeability of the cell membrane with respect to K+ and Na+?
Which statement accurately describes the permeability of the cell membrane with respect to K+ and Na+?
- The membrane is more permeable to Na+ than to K+
- The membrane has greater permeability to K+ than to Na+ (correct)
- The membrane is impermeable to both K+ and Na+
- The membrane is equally permeable to both K+ and Na+
What distinguishes bipolar neurons from other types of neurons?
What distinguishes bipolar neurons from other types of neurons?
Which ion channel type is always open and contributes to maintaining resting membrane potential?
Which ion channel type is always open and contributes to maintaining resting membrane potential?
What type of neurons carry impulses from sensory receptors to the central nervous system?
What type of neurons carry impulses from sensory receptors to the central nervous system?
Which of the following describes the structure of white matter in the PNS?
Which of the following describes the structure of white matter in the PNS?
What is the function of interneurons?
What is the function of interneurons?
Which statement accurately describes unipolar neurons?
Which statement accurately describes unipolar neurons?
In the context of resting membrane potential, which ion is typically found in higher concentrations outside the cell?
In the context of resting membrane potential, which ion is typically found in higher concentrations outside the cell?
What is the key role of conductivity in neurons?
What is the key role of conductivity in neurons?
What primarily happens at the point of equilibrium regarding potassium ions in resting membrane potential?
What primarily happens at the point of equilibrium regarding potassium ions in resting membrane potential?
Which type of neuron has its cell bodies located primarily in the central nervous system?
Which type of neuron has its cell bodies located primarily in the central nervous system?
What initiates the action potential in a neuron?
What initiates the action potential in a neuron?
Which type of conduction occurs in myelinated axons?
Which type of conduction occurs in myelinated axons?
What is the role of the sodium-potassium pump after an action potential?
What is the role of the sodium-potassium pump after an action potential?
What best describes the synaptic cleft?
What best describes the synaptic cleft?
What occurs during repolarization of a neuron?
What occurs during repolarization of a neuron?
What is a critical feature of a reflex arc?
What is a critical feature of a reflex arc?
Which statement is true regarding neurotransmitters?
Which statement is true regarding neurotransmitters?
What is the primary function of voltage-gated channels in neurons?
What is the primary function of voltage-gated channels in neurons?
What does continuous conduction refer to?
What does continuous conduction refer to?
What happens immediately after sodium ions rush into the neuron?
What happens immediately after sodium ions rush into the neuron?
