Neco 2017 Biology Question 8

Practice essay / theory question 8 from the 2017 Neco Biology examination. This question covers coordination, nervous system, reflex arc .

Neco 2017 Biology Essay / Theory

Topics: coordination nervous system reflex arc

Question 8 NECO • 2017 • BIOLOGY • essay

The diagram shows a simple spinal reflex arc involved in the regulation of muscle tone.

( a )

Describe, in order, the sequence of events that occur from the activation of the stretch receptor to the contraction of the skeletal muscle.

( b )

Explain how this reflex arc contributes to the coordination of voluntary movements.

( c )

Predict the likely effect on the reflex response if the dorsal root ganglion is damaged, and justify your answer.

( d )

Discuss how descending pathways from the brain can modify the magnitude of this reflex during a purposeful activity such as catching a ball.

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This is Neco 2017 Biology Question 8. It is one of the essay questions from the 2017 Neco Biology examination.

The question covers coordination, nervous system, reflex arc .

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