passwella.
Menu

JAMB Biology 2008 Question 28

Question 28

Nervous Coordination

The transmission of impulses along a nerve fibre is characterized by

  1. A.hormonal and temperature changes
  2. B.electrical and ionic changes
  3. C.hormonal changes
  4. D.electrostatic changes
Show the answer and explanation

Answer: B (electrical and ionic changes)

Explanation

A nerve impulse is a wave of electrical change caused by sodium and potassium ions moving across the nerve membrane.