Pearson Edexcel IGCSE · Human Biology

Coordination: Practice Questions

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

10 questions27 marksFree, no account

Question 1

1 mark

Which of the following is a primary function of the cerebellum in the human brain?

Question 2

1 mark

In the reflex arc, what is the correct sequence of structures through which a nerve impulse travels after a stimulus is detected by a receptor?

Question 3

1 mark

A patient presents with a clouding of the lens that prevents light from reaching the retina clearly. Which eye defect does this describe, and what is the typical treatment?

Question 4

1 mark

The body contains various types of receptors to detect different stimuli. Which term describes the receptors responsible for detecting chemical substances that constitute the sense of taste?

Question 5

1 mark

When a person moves from a dimly lit room into bright sunlight, which antagonistic action occurs in the iris to prevent damage to the retina?

Question 6

2 marks

State the primary role of the cerebellum in human coordination.

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Question 7

4 marks

Explain how the ciliary muscles and suspensory ligaments adapt the lens to focus on a near object.

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Question 8

6 marks

Explain how Selective Serotonin Reuptake Inhibitors (SSRIs) are used to treat the symptoms of depression by acting at the synapse.

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Question 9

4 marks

The human ear is responsible for both hearing and the maintenance of balance.
(a) Explain the specific role of the ossicles in the middle ear and how they contribute to the amplification of sound waves. (2 marks)
(b) Describe how the cochlea converts mechanical vibrations into electrical impulses that can be interpreted by the brain. (2 marks)

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Question 10

6 marks

The hypothalamus and the pituitary gland work together to coordinate several vital homeostatic and developmental processes.
(a) Describe how the hypothalamus monitors the blood to coordinate a response to dehydration. (2 marks)
(b) Explain the interaction between the hypothalamus and the pituitary gland in the release of antidiuretic hormone (ADH). (2 marks)
(c) Aside from ADH, name one gonadotrophic hormone released by the pituitary and state its role in the development of the reproductive system. (2 marks)

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