Gce Model Questions Vol1 2017 Biology Question 8

Practice essay / theory question 8 from the 2017 Gce Model Questions Vol1 Biology examination. This question covers Coordination .

Gce Model Questions Vol1 2017 Biology Essay / Theory

Topic: Coordination

Question 8 GCE_MODEL_QUESTIONS_VOL1 • 2017 • BIOLOGY • essay

A researcher investigates the neural control of the knee‑jerk (patellar) reflex in a healthy adult.

Question Parts

( a )

Outline the complete reflex arc, naming all neuronal components and the type of synapse involved at each junction.

( b )

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

( c )

The researcher administers a drug that blocks GABAergic inhibition in the spinal cord. Explain how this would alter the magnitude and timing of the knee‑jerk reflex, incorporating the concept of reciprocal inhibition.

( d )

Compare the knee‑jerk reflex with a voluntary knee‑extension movement in terms of neural pathways involved and speed of response.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is Gce Model Questions Vol1 2017 Biology Question 8. It is one of the essay questions from the 2017 Gce Model Questions Vol1 Biology examination.

The question covers Coordination .

View More Gce Model Questions Vol1 2017 Biology Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Chat with Support