The ends of the longest
nerve fibers in the body are usually the first to suffer, according to the American Academy of Neurology.
Not exact matches
The center of the cord is gray matter — essentially an extension of the brain, like a tail — that is sheathed
in fibrous white matter, with long, thin
nerve fibers called axons shooting out at intervals to wire every part of the
body.
Thermoreceptors are the
nerve fibers in your skin that let you know if, say, a
body part is on fire, or if that stovetop you're touching is still warm.
«The cornea is the most densely innervated tissue
in the
body, so corneal
nerve assessment is extremely sensitive for detecting small sensory
nerve fiber damage as compared to other tests including measurement of intra-epidermal
nerve fibers in the skin,» notes lead investigator Joseph L. Mankowski, DVM, PhD, who is Professor of Molecular and Comparative Pathobiology, Pathology, and Neurology at the Johns Hopkins University School of Medicine, Baltimore, MD..
Balance impairment is one of the most common and disabling symptoms of MS, a disease of the central nervous system
in which the
body's immune system attacks the protective sheath around
nerve fibers.
Just a day after fertilization, embryonic brains begin sending signals to far - off places
in the
body, helping oversee the layout of complex patterns of muscles and
nerve fibers.
The sensors, which the researchers have already shrunk to a 1 millimeter cube — about the size of a large grain of sand — contain a piezoelectric crystal that converts ultrasound vibrations from outside the
body into electricity to power a tiny, on - board transistor that is
in contact with a
nerve or muscle
fiber.
Neuroscientists think that misplaced sensations, called referred pains, arise when sensory
fibers from different parts of the
body connect to the same
nerve cells
in the spinal cord or brain stem, confusing your brain about which part of your
body the message came from.
When the NGF - rich solution was withdrawn from that side chamber, the
nerve fibers that had extended into it began to degenerate, even though the neuronal cell
bodies in the central NGF - containing chamber persisted
in good condition.
The microglia then «summon» peripheral immune cells from other parts of the
body, and these cells proceed to attack the protective myelin sheaths that surround the axons — or
nerve fibers —
in the brain.
The left hemisphere controls the majority of functions on the right side of the
body, while the right hemisphere controls most of functions on the left side of the
body The crossing of
nerve fibers takes place
in the brain stem.
Figure 2:
Nerve cell
bodies and
fibers labeled with rabbit anti-PGP + donkey anti-rabbit-Cy3 (711-225-152 green), vascular basement membranes labeled with collagen IV + donkey anti-mouse-Cy2 (715-225-150 red) and DAPI - labeled DNA (blue)
in jejunum submucosal ganglion.
V2a interneurons are,
in fact, some of the longest cells
in the
body, able to extend their axon — the
nerve fibers that transmit electrical impulses — across several vertebrae.
In MS, the
body's immune system assaults myelin — the protective coating that insulates the
nerves of the central nervous system — and
nerve fibers themselves.
In addition to slowing down the metabolism, organophosphates «can seriously impair a person's ability to exercise, permanently damaging
nerves, destroying muscle
fiber, reducing the
body's ability to fuel exercise, and even reduce a persons desire to exercise,» adds Dr. Baillie - Hamilton.
The laxity of ligaments causes an instability, which stimulates proprioceptive
nerve fibers and can lead to chronic muscle spasm
in the
body's attempt to stabilize the
No one knows what causes multiple sclerosis,
in which the
body's immune system attacks the protective myelin sheath surrounding
nerve fibers in the brain and spine.
Once the virus enters the cat's
body, it replicates
in the cells of the muscles and then spreads to the closest
nerve fibers, including all peripheral, sensory and motor
nerves, traveling from there to the CNS via fluid within the
nerves.
When an injury is inflicted to the spinal cord or its vertebrae, the
nerve fibers in the spinal cord are damaged, leaving the brain unable to send the right messages to other parts of the
body.