Main parts of neurons are ............. and
A. Cell body, Axon
B. Axon hillock, synaptic knob
C. Cell body, synaptic knob
D. Myelin sheath, axon
Answer
Verified
471.9k+ views
Hint: Neurons, the longest cell of the body that are incapable of division, are the building blocks of the nervous system. Their body has three main parts : the dendrites, the perikaryon and a long myelinated or myelinated process called the nerve fibre.
Complete answer:
Neurons are the building blocks of the nervous system and these cells help in receiving and transmitting the information to the brain. They carry messages throughout the body.
There are mainly three parts of neurons:
Dendrites: These branches like extensions at the starting of neurons which helps to increase the surface area of the cell body. These dendrites receive the chemical signals from the other neurons and then these are converted into electrical impulses which are then transmitted toward the cell body.
Cell body: Cell body receives the signal from the dendrites. There is presence of nucleus in the cell body and both of these play important roles in transmission of neural signals. The cell nucleus produces RNA which directs the synthesis of proteins.
Axon: It is extended from the cell body to the terminal endings and it is the elongated fibre which transmits the neural signal. The transmission of information depends on the diameter of the axon. Larger the diameter of the axon, faster it will transmit the information.
If we look at options now, let start with option D which is Myelin sheath, axon. Both of these are part of neurons but the main parts are asked in the question and main parts are the cell body, axon and dendrites. This option is incorrect since myelin sheath is not one of the main parts of neurons.
Moving to option C which is Cell body, synaptic knob. Cell body is one of the main parts of neurons but synaptic knob is not one of the main parts of neurons, therefore this option is correct and it gets eliminated.
Moving to option B which is Axon hillock, synaptic knob. Both of these are not one of the main parts of neurons and therefore this option also gets eliminated.
First option A is the cell body, axon. This option is the correct one since both the cell body and axon are main parts of neurons. Therefore, this option is correct.
Thus, the correct option is A which is Cell body, Axon.
Note: Neurons have three main parts: the cyton or the cell body, the dendrites, and the axon. Axons can be myelinated or non myelinated. In myelinated neurons impulses travel faster. Neurons lack the centrosomes and are incapable of division.
Complete answer:
Neurons are the building blocks of the nervous system and these cells help in receiving and transmitting the information to the brain. They carry messages throughout the body.
There are mainly three parts of neurons:
Dendrites: These branches like extensions at the starting of neurons which helps to increase the surface area of the cell body. These dendrites receive the chemical signals from the other neurons and then these are converted into electrical impulses which are then transmitted toward the cell body.
Cell body: Cell body receives the signal from the dendrites. There is presence of nucleus in the cell body and both of these play important roles in transmission of neural signals. The cell nucleus produces RNA which directs the synthesis of proteins.
Axon: It is extended from the cell body to the terminal endings and it is the elongated fibre which transmits the neural signal. The transmission of information depends on the diameter of the axon. Larger the diameter of the axon, faster it will transmit the information.
If we look at options now, let start with option D which is Myelin sheath, axon. Both of these are part of neurons but the main parts are asked in the question and main parts are the cell body, axon and dendrites. This option is incorrect since myelin sheath is not one of the main parts of neurons.
Moving to option C which is Cell body, synaptic knob. Cell body is one of the main parts of neurons but synaptic knob is not one of the main parts of neurons, therefore this option is correct and it gets eliminated.
Moving to option B which is Axon hillock, synaptic knob. Both of these are not one of the main parts of neurons and therefore this option also gets eliminated.
First option A is the cell body, axon. This option is the correct one since both the cell body and axon are main parts of neurons. Therefore, this option is correct.
Thus, the correct option is A which is Cell body, Axon.
Note: Neurons have three main parts: the cyton or the cell body, the dendrites, and the axon. Axons can be myelinated or non myelinated. In myelinated neurons impulses travel faster. Neurons lack the centrosomes and are incapable of division.
Recently Updated Pages
What percentage of the area in India is covered by class 10 social science CBSE
The area of a 6m wide road outside a garden in all class 10 maths CBSE
What is the electric flux through a cube of side 1 class 10 physics CBSE
If one root of x2 x k 0 maybe the square of the other class 10 maths CBSE
The radius and height of a cylinder are in the ratio class 10 maths CBSE
An almirah is sold for 5400 Rs after allowing a discount class 10 maths CBSE
Trending doubts
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Why is there a time difference of about 5 hours between class 10 social science CBSE
Who was Subhash Chandra Bose Why was he called Net class 10 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE
Explain the Treaty of Vienna of 1815 class 10 social science CBSE