control and coordination

1. The diagram shows a synapse. What are labelled parts?

• A

• B

• C

• D

1. The diagram shows a synapse between a motor neurone and a relay neurone.

• A

• B

• C

• D

The diagram shows a synapse.

• A

• B

• C

• D

1. Which row shows the actions needed for the eye to focus on a distant object?

• A

• B

• C

• D

1. Which responses occur in the iris of the eye when a person walks from a brightly lit area to a dimly lit area?

• A

• B

• C

• D

1. Neurones at synapses contain vesicles.

• A

• B

• C

• D

The components of a reflex arc shown in the flow diagram.

• A

• B

• C

• D

Which statement about light receptors in the retina of a normal human eye is correct?

• A

• B

• C

• D

The diagram shows a synapse.

• A

• B

• C

• D

The diagram shows a vertical section through part of a human eye. A fly is coming nearer to the eye. The eye begins to focus the image of the fly on its retina.

• A

• B

• C

• D