Sentences with phrase «sympathetic nerve fibers»

This finding implies that the tip of a growing sympathetic nerve fiber elongates along a diffusion gradient of NGF released by the target organ.

Not exact matches

Immature sympathetic neurons respond to NGF with a burst of metabolic activity that provides the material necessary for the growth of the nerve fiber and the manufacture of molecules of neurotransmitter.

The addition of a small amount of venom to the culture medium in the absence of the extract of sarcoma 180 elicited the growth of the same dense halo of nerve fibers around an isolated sensory or sympathetic ganglion.

Rather it seemed the tumor was releasing some chemical factor that was in turn inducing the remarkable growth of the sympathetic ganglia and the exuberant branching of their nerve fibers.

In addition to apparently being essential to the survival of immature sympathetic neurons NGF seems to play a vital role in guiding nerve fibers toward their corresponding target organs.

Apparently the NGF injected into the brain diffused through the motor and sensory roots of the spinal cord and reached the sympathetic chain ganglia flanking the cord, where it induced the outgrowth of nerve fibers.

Studies conducted by Hendry at the Australian National University and by K. Stockel and H. Thoenen at the Basel Institute for Immunology have demonstrated that NGF is taken up at the terminal nerve endings of the sympathetic fibers and transported back to the neuronal cell body along the axon.

He wanted to see how sensory and sympathetic ganglia, sending out their nerve fibers to these peripheral «fields of innervation,» would adjust to the different dimensions and configurations of the foreign organs.

It is important to understand that your ANS is divided into two distinctly separate nervous systems, one which stimulates the nerve fibers, the sympathetic nervous system or SNS, and the other which sedates nerve fibers, the parasympathetic nervous system or PNS.

Perhaps the sympathetic activation with water drinking involves osmoreceptive or sodium - sensitive afferent nerve fibers (21, 22).