0
Schwann cells are neuroglial cells that actually cover and insulate axons. They not only help to spend up nerve transmission, but they also feed the neuron.
Wiki User
∙ 9y ago
Wiki User
∙ 14y agoThe myelin sheath.
Add your answer:
Earn +20 pts
What is the primary function of the myelin sheath is to?
Myelin is a lipid which surrounds the axon and provides for faster and more complex neural conduction.
What does a myelin sheath do in a nerve cell?
A Meylin Sheath increases the speed of the nerve impulses and electronically insulates the fibers from one to another.A disease that effects the myelin sheath is multiple sclerosis (MS).The function of the myelin sheath is to act as an insulator for the nerve cell. It's kind of like the rubber casing found on the outside of wires to protect the electron movement inside and allow us not to get shocked. MS causes the destruction of the myelin sheath which causes it to scar and harden and as a result we short circuit in our body. This is equivalent to peeling off some of the rubber casing off a wire and then plugging the wire into a socket.Some results of MS are:-double vision-speech impairment-jerky limbs-paralyzed muscles.
The speed of transmission in a neuron will occur fastest if the myelin sheath around the axon is?
highly concentrated
Which of this speed are faster than the speed of a nerve messagespeed of electricityspeed of sound or speed of light?
speed of light
Would conduction speed of a nerve fiber be the fastest in a large or small myelinated fiber?
Yes. Myelinated fibers have a myelin sheath around them which keeps the impulse from scattering and on a direct path. This makes the impulse travel faster than unmyelinated fibers.
What is the insulating layer wrapped around nerve cells that increases the speed of nerve impulse transmission?
The myelin sheath. Due to its insulating properties, the myelin sheath prevents the movement of ions in nerve cells. Therefore nervous impulses will jump between the gaps in the myelin sheath (called the Nodes of Ranvier). This is a lot quicker than the conduction in non-myelinated nerve fibres which occurs by the movement of ions across each of the nerve cell membranes.
What is the myelin sheath's function?
The function of the myelin sheath is to insulate the axon of the neuron. When there are gaps in the sheath, known as nodes of Ranvier, the nerve impulse can jump from gap to gap, thus increasing greatly the speed of conduction of the nerve impulse. This is known as saltatory conduction.
What the function of the myelin sheath?
The function of the myelin sheath is to insulate the axon of the neuron. When there are gaps in the sheath, known as nodes of Ranvier, the nerve impulse can jump from gap to gap, thus increasing greatly the speed of conduction of the nerve impulse. This is known as saltatory conduction.
What is the effect of the myelin sheath on synaptic transmission?
Myalin sheath gives insulation to the neurons. They also hasten the nerve conduction by saltatory conduction.
How does the myelin sheath and synapse affect nerve impulses speed up or slow down?
Myelin sheath insulates axons for speedier signaling
How fast does myelin sheath travel?
The speed at which your nerve impulses travels is dependent on the type of fiber. On fibers that allow the nerve to travel faster can reach speeds of over 200 miles per hour.
The material surrounding the axon that increases the speed of the nerve impulse is?
there is a myein sheath which is a bit constricted inwards at regular intevals, revealing a bit of axon. the sheath between 2 of such constrictions makes up a schwann cell.
What increases the speed of the transmission?
Myelin Sheath Myelin Sheath
What increases the speed of impulse transmission?
Myelin Sheath Myelin Sheath
What causes the symptoms of transverse myelitis?
The symptoms of transverse myelitis are due to damage and/or destruction of the myelin sheath, the fatty white covering of nerve fibers that serves both to insulate the nerve fibers and to speed nervous conduction along them.
Funtion of the nucleus of a schwann cell?
When the peripheral nervous system develops, Schwann cells line up along unmyelinated axons at regular intervals that eventually become the nodes of Ranvier (important for saltatory nerve condution). The ensheathing process takes place as Schwann cells wrap around the axon many times over, creating concentric layers whose cytoplasm progressively condenses. Contact with the axons also activates myelin genes leading to the expression of myelin glycoproteins and lipids across the Schwann cell plasma membrane. The sheath therefore consists of plasma membrane, cytosol, lipids, glycoproteins, and the Schwann cell nucleus.*So basically, the schwann cells is a protective membrane that covers the axon. It also produces myelin sheath (the coating of a neuron), which increases the speed of the nerve impulse.
What is the primary function of the myelin sheath is to?
Myelin is a lipid which surrounds the axon and provides for faster and more complex neural conduction.
