12 Questions
Where are voltage-gated sodium channels located?
On nerve fibers
What is the function of cAMP in a postsynaptic cell?
To act as a second messenger
What is the characteristic of a muscle fiber compared to a nerve fiber?
It is an entire cell
What is the effect of Ach on skeletal muscle fibers?
It generates an EPSP
What is the function of Schwann cells in the peripheral nervous system?
To myelinate axons
What is the location of nuclei in the brain?
In the cerebral cortex
What is the outer, cytoplasmic portion of a Schwann cell associated with myelinated axons called?
Neurilemma
Which type of fibers conduct impulses to produce precise movements of the eyeball?
Class-A fibers
What is the significance of calcium ions in neuronal transmission?
They are necessary for a neuron to pass an impulse to another neuron
What is the characteristic of action potentials along axons and muscle fibers?
They follow the all-or-nothing principle
What type of conduction would likely experience electrolyte imbalance before others?
Continuous conduction
What is the relationship between an oligodendrocyte and a myelinated axon?
One oligodendrocyte is associated with multiple myelinated axons
Test your knowledge of neurophysiology concepts, including the structure and function of axons, neurons, and synaptic transmission. This quiz covers voltage-gated channels, EPSPs, and second messengers. See how well you understand the mechanisms of neural signaling!
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