During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
first positive, then negative and continue to be negative
first negative, then positive and continue to be positive
first positive, then negative and again back to positive
first negative, then positive and again back to negative
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive
K+ into the cell
K+ and Na out of the cell
Na+ into the cell
Na+ out of the cell
Parkinson’s disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter
acetylcholine
norepinephrine
dopamine
GABA
When we migrate from dark to light, we fail to see for sometime but after a time visibility becomes normal. It is example of
accomodation
adaptation
mutation
photoperiodism
