12 Questions
What causes the downswing/repolarisation of the neuron?
Opening of little holes to let potassium out
What is the purpose of the refractory period in a neuron?
To bring the cell back to its resting potential
How do myelin sheaths affect neural transmission?
They cause saltatory conduction, allowing faster transmission
How are glial cells different from neurons?
Glial cells do not transmit information as neurons do
What is the main function of dendrites in a neuron?
Receiving information from other neurons and relaying it to the cell body
What is the role of the myelin sheath in a neuron?
Insulating the axon to make information move faster
What is the significance of the resting potential in a neuron?
It maintains a more negative charge inside the neuron than outside
What triggers an action potential in a neuron?
The opening of little holes in the cell membrane, allowing sodium to enter
Why is the brain folded?
To maximize the capacity of neurons the brain can hold
What is the difference between a sulcus and a gyrus?
Gyri are flat surfaces on the brain, while sulci are small indents
What did silver nitrate have to do with Golgi and Ramon y Cajal’s work on neurons?
It was used to visualize and stain cells black, allowing them to observe neurons for the first time
What was Golgi and Ramon y Cajal’s key insight about neurons?
Neurons in the brain are responsible for mental processing
Test your knowledge of neuronal action potential principles with this quiz. Explore concepts such as upswing, peak potential, downswing, all-or-none principle, and signal propagation.
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