Senior Secondary (HKDSE) · Physical Education

Nervous System: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Nervous System.

10 questions27 marksFree, no account

Question 1

1 mark

Which part of the central nervous system is responsible for coordinating voluntary muscle movements and maintaining balance and posture?

Question 2

1 mark

During the transmission of a nerve impulse, which ion primarily moves into the neuron to cause depolarization during the rising phase of an action potential?

Question 3

1 mark

Immediately following a maximal effort 100m sprint, an athlete's heart rate begins to decrease. Which division of the nervous system is primarily responsible for this reduction in heart rate toward resting levels?

Question 4

1 mark

Which part of a neuron is primarily responsible for receiving incoming signals from other neurons?

Question 5

1 mark

Regarding the All-or-None Law in the nervous system, which of the following statements is correct?

Question 6

2 marks

What is a synapse in the nervous system, and identify the specific chemical substance required to transmit a signal across it.

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Question 7

3 marks

Contrast the roles of the sympathetic and parasympathetic nervous systems in regulating heart rate during the transition from vigorous exercise to a recovery state.

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Question 8

6 marks

Trace the neural pathway of a voluntary motor command from the primary motor cortex to the target muscle, identifying the role of the corticospinal tract in the spinal cord.

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Question 9

5 marks

The reflex arc is a neural pathway that mediates a reflex action. In many sporting situations, rapid involuntary responses are necessary for safety or performance.
(a) Based on the typical pathway of a spinal reflex, list the five essential components in the sequence through which a nerve impulse travels, beginning with the sensory receptor.
(b) Explain the functional advantage of a reflex over a voluntary movement in terms of the neural processing involved.

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Question 10

6 marks

The nervous system regulates muscular force through several mechanisms. (a) Explain the All-or-None Law in the context of a single motor unit. (b) Distinguish between spatial summation and temporal summation (rate coding). (c) Describe how these processes allow a weightlifter to produce a graduated increase in force when transitioning from a warm-up set to a maximum lift.

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