3.1 Coordination & Control – the Nervous System

The image below shows a a sensory neurone which forms part of a reflex arc in the nervous system.

An impulse moves along the neurone from Q to P.

What structures would be found at P?

The image shows a cross section of the eye. 

Which label(s) is/are pointing to the structure(s) which refract(s) light to help focus an image on the retina?

Which part of the human brain is responsible initiating vasodilation of arterioles?

Which would be the correct method to treat the eye defect shown in the diagram?

A woman was in an accident and suffered a significant injury to her hypothalamus.

Which of the following statements may be true for the woman's injury?

I. She may suffer symptoms such as an inability to regulate body temperature

II. An MRI scan could be used to try and establish the extent of the damage

III. The hypothalamus is easily accessible and so surgery is an option to repair the damage done

Which part of the brain automatically controls heart rate and breathing rate?

Which eye defect can be overcome by using spectacles containing concave lenses?

The diagram shows the brain.

What is the name of part X?

The diagram shows the eye.

What is the name of part X?

Which condition can be caused by a lens in the eye that is too thick?

The eye switches from focusing on a distant television to focusing on a close up newspaper.

Which change happens to the suspensory ligaments and to the lens during this switch?

Look at the diagram showing an eye defect.

What is the defect and which lens could be used to correct it?

Anaesthetics used during operations slow down breathing and heart rate.

Which part of the brain do anaesthetics act on to do this?

A motor neurone is usually stimulated by a relay neurone.

Which part of the motor neurone is first stimulated by a relay neurone?

Which row in the table represents the eye when a person is in a dark room?

The diagram shows a reflex arc.

A patient needs treatment for a leg injury.

An anaesthetic is injected to block nerve impulses to prevent pain but still allow movement of the leg.

Where was the anaesthetic injected in this patient?

Which part of the eye does not function correctly in colour blindness?

Which label is pointing to the myelin sheath in a sensory neurone?

What is the name of the gap between two neurones?

Light travels through different parts to reach the back of the eye.

Which structure does light pass through first when it enters the eye?

Which part of the brain controls the heartbeat and breathing?