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 charge ?

Options

A. First positive, then negative and continue to be negative
B. First negative, then positive and continue to be positive
C. First positive, then negative and again back to positive
D. First negative, then positive and again back to negative

Answer

D

Explanation

If some factor becomes excessive or deficient, a control system initiates negative feedback, which consists of a series of changes that return the factor towards a certain mean value, thus maintaining homoestasis, The effects intiated are negative with respect to the initiating stimulus. In this case, low temperature is the initiating stimulus.