- myelinated. For example, in the PNS, a
large proportion of
axons are
unmyelinated. Instead, they are
ensheathed by non-myelinating
Schwann cells known...
-
central nervous system: Grey
matter is
composed of cell bodies, dendrites,
unmyelinated axons,
protoplasmic astrocytes (astrocyte subtype),
satellite oligodendrocytes...
- circuit.
Myelinated axons only
allow action potentials to
occur at the
unmyelinated nodes of
Ranvier that
occur between the
myelinated internodes. It is...
-
heavily myelinated,
group B are
moderately myelinated, and
group C are
unmyelinated. The
other classification is a
sensory grouping that uses the
terms type...
-
system (CNS) and
peripheral nervous system (PNS). The C
group fibers are
unmyelinated and have a
small diameter and low
conduction velocity,
whereas Groups...
-
between small (
unmyelinated) and
thick (myelinated) fibers. In this model, the fast (myelinated)
fibers block the slow (
unmyelinated) fibers: "fast blocks...
-
group C
nerve fibers.
Groups A and B are myelinated, and
group C are
unmyelinated.
These groups include both
sensory fibers and
motor fibers.
Another classification...
-
their unmyelinated counterparts. For example,
action potentials move at
roughly the same
speed (25 m/s) in a
myelinated frog axon and an
unmyelinated squid...
-
creates a
withdrawal reflex,
whereas itches leads to a
scratch reflex.
Unmyelinated nerve fibers for
itches and pain both
originate in the skin. Information...
-
Action potential propagation in
myelinated neurons is
faster than in
unmyelinated neurons(left)...
