Neco 2019 Biology Question 8

Practice essay / theory question 8 from the 2019 Neco Biology examination. This question covers coordination, nervous system, reflex action .

Neco 2019 Biology Essay / Theory

Topics: coordination nervous system reflex action

Question 8 NECO • 2019 • BIOLOGY • essay

The diagram shows a simple spinal reflex arc in the human body.

Question Parts

( a )

Identify each labelled structure in the diagram.

( b )

Describe the sequence of events that occur from the moment a painful stimulus is applied to the skin until the muscle contracts, referencing the labelled parts.

( c )

Explain two major differences between this reflex response and a voluntary response to the same stimulus, focusing on neural pathways and speed of response.

( d )

A patient suffers damage to the dorsal root ganglion of the reflex arc. Predict how this injury would affect the reflex response and justify your answer.

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About This Question

This is Neco 2019 Biology Question 8. It is one of the essay questions from the 2019 Neco Biology examination.

The question covers coordination, nervous system, reflex action .

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