NEET 2008 Biology question

During the propagation of a nerve impulse, the action potential results from the movement of

(1) ions from extracellular fluid to intracellular fluidCorrect
(2) ions from extracellular fluid to intracellular fluid
(3) ions from intracellular fluid to extracellular fluid
(4) ions from intracellular fluid to extracellular fluid

Answer: (1)

Solution

When a threshold stimulus is applied, voltage-gated channels open and ions rush from the extracellular fluid into the neuron (intracellular fluid); the membrane depolarises and the inside becomes positive relative to the outside,

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-090087