Cranial motor axon projections are guided by diffusible cues and aided by guideposts, such as nerve exit points, glial cells and muscle primordia. The recent identification of genes that are ...
The axon initial segment (AIS) is where nerve signals begin, and its adaptability is key to brain function. Scientists have found that the AIS changes in response to activity levels, helping neurons ...
This causes an influx of positive sodium ions into the cell, raising the voltage and depolarizing the membrane. As the voltage increases along the axon, additional sodium channels open, propagating ...
the oligodendrocyte sends cell processes to myelinate multiple segments on many axons (Figure 2). Although there are several molecular or morphological differences between nerve fibers in the PNS ...
A long fibre (axon) which is insulated by a fatty (myelin ... These receive incoming impulses from other neurones. Receptor cells detect a change in the environment (a stimulus) and start ...
It helps transmit nerve signals, or impulses, down a long axon. All neurons have a cell body. The cell body contains important structures, such as the genetic information, energy producing ...
In a provocative new study, scientists challenge a fundamental tenet in neuroscience about the shape of axons -- the long, thin filaments radiating from nerve cells that transmit electrical signal ...