Igcse Model Questions Vol1 2024 Biology Question 8

Practice essay / theory question 8 from the 2024 Igcse Model Questions Vol1 Biology examination. This question covers Coordination, Nervous system, Endocrine system, Reflex action, Fight‑or‑flight response .

Igcse Model Questions Vol1 2024 Biology Essay / Theory
Topics: Coordination Nervous system Endocrine system Reflex action Fight‑or‑flight response
Question 8 IGCSE_MODEL_QUESTIONS_VOL1 • 2024 • BIOLOGY • essay

Discuss the coordination of the nervous and endocrine systems in controlling rapid and sustained physiological responses.

Question Parts

( a )
Explain the complete pathway of the knee‑jerk (patellar) stretch reflex, naming the type of receptor, the sensory neuron, the integration centre, the motor neuron and the resulting muscle action.
( b )
A patient suffers a complete transection of the spinal cord at the T12 level. Predict which reflexes below the lesion will be affected and justify your answer.
( c )
Describe how the nervous system and endocrine system cooperate during the ‘fight‑or‑flight’ response, specifying the role of the hypothalamus, sympathetic nerves, adrenal medulla and the hormones released.

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About This Question

This is Igcse Model Questions Vol1 2024 Biology Question 8. It is one of the essay questions from the 2024 Igcse Model Questions Vol1 Biology examination.

The question covers Coordination, Nervous system, Endocrine system, Reflex action, Fight‑or‑flight response .

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