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JAMB Biology 1980 Question 34

Question 34

Nervous Coordination

The following are connected with the movement of a reflex action (1) Central nervous system (2) Muscle (3) Skin (4) Sensory nerve (5) Motor nerve. Which of the following sequences indicates a correct path?

  1. A.1-2-3-4-5
  2. B.2-1-4-5-3
  3. C.3-4-1-2-5
  4. D.4-1-5-2-3
  5. E.3-4-1-5-2.
Show the answer and explanation

Answer: E (3-4-1-5-2.)

Explanation

The stimulus is picked up in the skin (3), carried by a sensory nerve (4) to the CNS (1), then by a motor nerve (5) to the muscle (2).