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Myelin makes it easier for acons to transmit signals- it speeds there work.
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Wiki won't help you cheat, so get to work.
What creates the myelin sheath in the PNS?
Schwann cells make the myelin sheath in the PNS. Each of the Schwann cells myelinate their own segment of the axon, they work together to make the myelin sheath.
What makes myelin in the CNS and PNS?
CNS: oligodendrocytes make the myelin, they cooperate in the formation of a myelin sheath along the axon, this is the process of myelination. Each oligodendrocyte produces segments of several axons.PNS: schwann cells make the myelin, each schwann cell can myelinate one segment of a single axon and they work together ot form the myelin sheath.
What is the next work for canals throughout the cell?
axons neurons , cells help protect the bodys defense system against infection ..auto-immune defiency ...also oxygen
The axons of some neurons have an insulating coating called?
This is called myelin or myelin sheath. It's made mainly from fat with a few proteins in it, and is produced by oligodendrocyte cells in the CNS and schwann cells in the peripheral nervous system. It speeds up nerve signalling by allowing action potentials (the electric currents that make up nerve impulses) to skip between the gaps in the myelin (nodes of ranvier). In unmyelinated axons, sodium and potassium channels have to create the voltage differences at every single step along the nerve. (Say for example 100 times per nerve). Myelinated neurones only need to create these voltage differences at the nodes of ranvier (where sodium and potassium ion channels are located on myelinated neurones) Say for example there are 10 nodes of ranvier on a myelinated axon. The unmyelinated axon must create this voltage difference 10 times more frequently than the myelinated axon, hence the nerve impulse travels 10 times faster in a myelinated axon. (Based on the random numbers I used. In real life the numbers may be wildly different, but they still work in this way).
What applicants are needed for group work to insulate nerve fibers through an entire body?
Myelin Sheath
What is a giant axons?
A giant axon is a very large nerve cell. Neuroscientists obtain them from animals like squid in order to study how nerve cells function. Giant axons can be several hundred times larger than human axons, which makes them easier for scientists to work with. Neuroscientists use tiny electrical probes to measure the electrical activity of nerve cells and its easier for them to insert these probes into the giant axons (which are typically about 0.5 mm wide, but can even be 1mm wide).A giant axon is a very large nerve cell. Neuroscientists obtain them from animals like squid in order to study how nerve cells function. Giant axons can be several hundred times larger than human axons, which makes them easier for scientists to work with. Neuroscientists use tiny electrical probes to measure the electrical activity of nerve cells and its easier for them to insert these probes into the giant axons (which are typically about 0.5 mm wide, but can even be 1mm wide).
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