Answer
Verified
387.9k+ views
Hint:Nerve fiber is a long, slender projection of a nerve cell or neuron that typically conducts electrical impulses. These conduct information from the sensory neuron to the central nervous system.
Complete answer:
1. Myelinated nerve fibers are nerve fibers that are insulated by a myelin sheath whereas unmyelinated nerve fibers do not have a myelin sheath.
2. Myelinated nerve fibers are white in color whereas the unmyelinated nerve fibers are gray in color.
3. The myelinated nerve fibers have nodes of Ranvier while unmyelinated nerve fibers do not have nodes of Ranvier.
>Nodes of Ranvier are spaces between the myelin coatings on the neuron’s axon. The nodes of Ranvier serve to facilitate the rapid condition of nerve impulses.
>Due to presence of nodes of Ranvier in myelinated nerve fibers, the speed of transmission of nerve impulses is high in myelinated nerve fibres and in unmyelinated nerve fibers speed of transmission of the nerve impulses is low.
4. Most neurons in the central and peripheral nervous system are myelinated because they require fast condition speed such as neurons involved in spinal reflexes. Unmyelinated neurons can be found in both peripheral and central nervous systems.
5. Due to presence of myelin sheath myelinated nerves do not lose the impulse during condition whereas unmyelinated nerve fibers can lose the nerve impulse during condition.
6. The nerve fibers with long axons are myelinated whereas the short axon nerve fibers are unmyelinated.
Note:Myelin is a fatty substance that insulates the nerve cell axons so as to increase the speed at which information travels from our nerve cell body to another.
Complete answer:
1. Myelinated nerve fibers are nerve fibers that are insulated by a myelin sheath whereas unmyelinated nerve fibers do not have a myelin sheath.
2. Myelinated nerve fibers are white in color whereas the unmyelinated nerve fibers are gray in color.
3. The myelinated nerve fibers have nodes of Ranvier while unmyelinated nerve fibers do not have nodes of Ranvier.
>Nodes of Ranvier are spaces between the myelin coatings on the neuron’s axon. The nodes of Ranvier serve to facilitate the rapid condition of nerve impulses.
>Due to presence of nodes of Ranvier in myelinated nerve fibers, the speed of transmission of nerve impulses is high in myelinated nerve fibres and in unmyelinated nerve fibers speed of transmission of the nerve impulses is low.
4. Most neurons in the central and peripheral nervous system are myelinated because they require fast condition speed such as neurons involved in spinal reflexes. Unmyelinated neurons can be found in both peripheral and central nervous systems.
5. Due to presence of myelin sheath myelinated nerves do not lose the impulse during condition whereas unmyelinated nerve fibers can lose the nerve impulse during condition.
6. The nerve fibers with long axons are myelinated whereas the short axon nerve fibers are unmyelinated.
Note:Myelin is a fatty substance that insulates the nerve cell axons so as to increase the speed at which information travels from our nerve cell body to another.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
Using the following information to help you answer class 12 chemistry CBSE
Which of the following would not be a valid reason class 11 biology CBSE
Why should electric field lines never cross each other class 12 physics CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Select the correct plural noun from the given singular class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The sum of three consecutive multiples of 11 is 363 class 7 maths CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How many squares are there in a chess board A 1296 class 11 maths CBSE