Conversely, for a given conduction velocity,
myelinated fibers are smaller than their Unmyelinated counterparts.
Regularly spaced Unmyelinated patches, called the nodes of Ranvier, generate
action potentials to boost the signal.
However, action potentials may end prematurely in certain
places where the safety factor is low, even in Unmyelinated neurons;
action potentials move at roughly the same speed(25 m/s) in a myelinated frog axon and an Unmyelinated squid giant axon,
Besides, how can we adults wait, hold our breaths-
for as many as ten years- until their Unmyelinated brains mature and can operate, hopefully, as adults?
However, action potentials may end prematurely in certain places where
the safety factor is low, even in Unmyelinated neurons; a common example is the branch
point of an axon, where it divides into two axons.
For example,
action potentials move at roughly the same speed(25 m/s) in a myelinated frog axon and an Unmyelinated squid giant axon,
but the frog axon has a roughly 30-fold smaller diameter and 1000-fold smaller cross-sectional area.