AQA GCSE · Biology 8461

The human nervous system: Practice Questions

5 multiple-choice questions marked as you go, and 2 written questions with worked solutions. All on The human nervous system.

7 questions13 marksFree, no account

Question 1

1 mark

What are the two main components that make up the Central Nervous System (CNS)?

Question 2

1 mark

In a reflex arc, what is the specific function of a relay neurone?

Question 3

1 mark

In a reflex arc, what is the specific role of a synapse?

Question 4

1 mark

What occurs during accommodation when the eye focuses on a distant object?

Question 5

1 mark

During accommodation to focus on a near object, which of the following changes occur in the eye?

Question 6

3 marks

Describe two characteristics of a reflex action and explain why these actions are vital for an organism's survival.

Write your answer out first, then check it against the worked solution.

Question 7

5 marks

The diagram shows the pathway of a reflex arc when a person accidentally touches a hot object.

a) Information from receptors passes along cells as electrical impulses to the central nervous system (CNS). Name the two parts of the human body that make up the CNS.

b) Complete the sequence for the reflex arc shown in the diagram:
stimulus → receptor → sensory neurone → __________ → __________ → effector → response.

c) Reflex actions are described as automatic and rapid. Explain why these actions do not involve the conscious part of the brain and why this is a survival advantage.

Write your answer out first, then check it against the worked solution.

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