Statement 1: |
Neurons are excitable cells |
Statement 2: |
The membrane of neurons in a depolarized state is responsible for excitability |
a) |
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1 |
b) |
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1 |
c) |
Statement 1 is True, Statement 2 is False |
d) |
Statement 1 is False, Statement 2 is True |
Statement 1: |
Neurons are excitable cells |
Statement 2: |
The membrane of neurons in a depolarized state is responsible for excitability |
a) |
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1 |
b) |
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1 |
c) |
Statement 1 is True, Statement 2 is False |
d) |
Statement 1 is False, Statement 2 is True |
(a)
Neurons are excitable cells. Excitability is the ability of nerve cells to generate an electrical impulse in response to a stimulus. When a nerve fibre receives stimulus, the potential across the membrane is reversed at the point of excitation
It means, the inner side of plasma membrane of the cell becomes more positively charged with respect to the outer side of plasma membrane. This change in polarity is called action potential. This condition of reverse polarity is said to be depolarized