Snapquiz - The Central Nervous System and Reflexes

This is the Snapquiz on The Central Nervous System and Reflexes. Click here or use the embedded video if you haven't watched the lesson yet.

Question 1. How are signals passed across a synapse?


Question 2. Which organ is sensitive to the presence of chemicals?

The eyes.
The ears.
The tongue.
The skin.

Question 3. Why are nervous impulses sent via a synapse to a relay neurone?

The synapse amplifies signals.
The synapse sends signals faster than a neurone.
The synapse filters incorrect signals.
The synapse can send signals to more than one neurone.

Question 4. In a reflex action, which organ decides how to respond?

The receptor.
The effector.
The spinal cord.
The brain.

Question 5. How do nervous impulses travel away from the central nervous system towards the organ which needs to respond?

Along a sensory neurone.
Across a synapse.
Along a motor neurone.
Along a relay neurone.

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