10 Questions
What is the membrane potential called when there is an unequal distribution of ions and different membrane permeability of ions?
Resting potential
What is the value of the membrane potential during resting potential?
-70 mV
During which phase of action potential does the inner medium of the cell become more positive?
Depolarization
What happens to the inner medium during the repolarization phase of action potential?
It gradually becomes negatively charged again
What is the potential difference between the inner medium and outside medium during action potential?
+30 mV
What is the role of myelin in neurons?
Speeds up the nervous message
Which type of neuron transmits the nervous message from the sensory receptor towards the Central Nervous System?
Sensory neuron
In terms of myelin presence, what characterizes non-myelinated neurons?
Lacks myelin sheath
Which neuron classification is based on having many cytoplasmic prolongations?
Multipolar neuron
What characterizes the resting potential of neurons regarding ion concentration?
Intracellular medium has more K+ ions than Na+ ions
Test your knowledge on neurons, the functional units of the nervous system responsible for transmitting nervous messages. Learn about the different parts of a neuron and their classifications based on shape.
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