Answer
Verified
396.3k+ views
Hint: a) Na+ plays important role in generating the action potential by the rapid flow of ions in and out across the membranes of the axon
b) The retina produces the light-induced impulses mainly because of the presence of photopigments.
c) The nerve impulse in the inner ear is produced by the sound waves are transferred from the eardrum to the cochlea and impulses are generated.
Complete answer:
A) Whenever the nerve fiber is stimulated, the membrane potential is generated and this membrane potential decreases because it is more permeable to sodium ions than potassium ions.
So that all the sodium ions diffuse from outside to inside the membrane and the inside of the axon, it is more positively charged.
So the outside of the membrane is negatively charged and the inside is positively charged.
As the polarity becomes reverse, ( during the resting phase, it is opposite in nature) this process is called depolarization.
Due to this rapid inflow of the Na+ ions accord the membrane generates the action potential.
B) Normally the retina contains photopigments called retinal and opsin.
This retinal and opsin are associated with each other, whenever the light enters the retina, it degenerates the structure of opsin, so that both pigments are disassociating with each other and during this process, the impulse produced and the action potential is generated.
C) Whenever the sound waves travel to the ear, it falls on the eardrum and then it transmits to the inner ear by the ear ossicles.
The sound travels through the inner small window to the fluid of cochlea and where it generates the waves and these waves induce the hair cells and finally generates the impulse and the action potential is generated.
Note:
In the inner ear after the nerve impulse forms and the action potential generates, which is associated with the afferent neurons and transmitted to the brain to the auditory cortex of the brain.
b) The retina produces the light-induced impulses mainly because of the presence of photopigments.
c) The nerve impulse in the inner ear is produced by the sound waves are transferred from the eardrum to the cochlea and impulses are generated.
Complete answer:
A) Whenever the nerve fiber is stimulated, the membrane potential is generated and this membrane potential decreases because it is more permeable to sodium ions than potassium ions.
So that all the sodium ions diffuse from outside to inside the membrane and the inside of the axon, it is more positively charged.
So the outside of the membrane is negatively charged and the inside is positively charged.
As the polarity becomes reverse, ( during the resting phase, it is opposite in nature) this process is called depolarization.
Due to this rapid inflow of the Na+ ions accord the membrane generates the action potential.
B) Normally the retina contains photopigments called retinal and opsin.
This retinal and opsin are associated with each other, whenever the light enters the retina, it degenerates the structure of opsin, so that both pigments are disassociating with each other and during this process, the impulse produced and the action potential is generated.
C) Whenever the sound waves travel to the ear, it falls on the eardrum and then it transmits to the inner ear by the ear ossicles.
The sound travels through the inner small window to the fluid of cochlea and where it generates the waves and these waves induce the hair cells and finally generates the impulse and the action potential is generated.
Note:
In the inner ear after the nerve impulse forms and the action potential generates, which is associated with the afferent neurons and transmitted to the brain to the auditory cortex of the brain.
Recently Updated Pages
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
What are the possible quantum number for the last outermost class 11 chemistry CBSE
Is C2 paramagnetic or diamagnetic class 11 chemistry CBSE
What happens when entropy reaches maximum class 11 chemistry JEE_Main
Calculate the volume occupied by 88 gram of CO2 at class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE