The smallest neuron is at .004mm. The longest neuron, which runs from the lower spinal cord to the big toe, is over a meter long!
Diameter of neuron = 4 micron (granule cell) to 100 micron (motor neuron in cord)
Diameter of neuron nucleus = 3 to 18 micron
Diameter of neuron = 4 micron (granule cell) to 100 micron (motor neuron in cord) Diameter of neuron nucleus = 3 to 18 micron. Hope that helps. (:
A neuron is around 5 to 100 micro metres
40.
I'm guessing; "myelinated nerve fibres" contrary to the much slower "non-myelinated nerve fibres"
The nerve fiber.
The reason why a peripheral nerve such as the sciatic nerve can contain nerve fiber from several spinal nerves is owing to nerve plexuses. These are networks of nerves all tangled together and found mostly in the limbs.
a nerve fiber that lacks the fatty myelin insulating sheath. Such fibers form the gray matter of the nervous system, as distinguished from the white matter of myelinated fibers. Also called nonmedullated nerve fiber.
A neuron is a nerve cell in which, are circular cells that are bundled together known as ganglion. A actual nerve is attached to the nerve cell. There are two types of nerves ones that travel messages from the brain or to the brain. A nerve fiber that sends messages from the brain is called an axon fiber. The structure of an axon fiber includes myelin, which is a fatty substance stored on the outside of the nerve fiber to speed the message up. between each piece of myelin is a space called the node of ranvier that speeds the impulse up to. An alkali metal that is common and vital for all nerves is sodium. When a nerve impulse is taken place, the electrical activity passes through the sodium. Once the electrical activity has passed through the sodium atoms they become neutrally charged as they move towards the outside of the nerve fiber. The second type of nerve fiber is named a dendrite. The only difference the dendrite has is that it has no myelin sheath on the outisdeof the nerve to speed it up and also travels a lot slower than the axon fiber. Nerve fibers are bundled together in an actual nerve as the surrounding substance that keeps the nerve fibers together in the nerve is called perineurium. Towards the outside of the perineurium cluster is a substance named epineurium.
required to maintain nerve fiber sheath
What is the difference between the contour and magnitude of single nerve fiber and nerve trunk?
I'm guessing; "myelinated nerve fibres" contrary to the much slower "non-myelinated nerve fibres"
C fiber sensory nerves have small diameter unmyelenated axons and carry the signals from pain receptors.
Impulses travel more slowly through unmyelinated nerve fiber.
The nerve fiber.
The reason why a peripheral nerve such as the sciatic nerve can contain nerve fiber from several spinal nerves is owing to nerve plexuses. These are networks of nerves all tangled together and found mostly in the limbs.
a nerve fiber that lacks the fatty myelin insulating sheath. Such fibers form the gray matter of the nervous system, as distinguished from the white matter of myelinated fibers. Also called nonmedullated nerve fiber.
Nerve impulses are conducted along the axon in the myelinated nerve fiber with causes the polarity of the nerve.
Well of course they meet at the neuromuscular junction
Electrical diferences.
Electrical diferences.