5.3) Neuronal communication

Question 1

How does the sodium potassium pump works?

Answer 1

The stimulus arrives and some v-gated channels open , smaller generator potential.
If the threshold value of -50mv is met , v-gated channels open - positive feedback
Na+ rushes in the membrane - +40mv
Na+ v-gated channels close, k+ channels open k+ diffuse restore P.D
Hyperpolarisation overshoot, Na+ / K+ pumps rester to resting. Refracory period.