19820686
Description
Mind Map by Rose Tarnowski, updated more than 1 year ago
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Created by Rose Tarnowski
about 6 years ago
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Topic 5- Reflex Action
- What is a reflex action?
- rapid automatic response of the
nervous system
- unconscious- does
not involve the
brain
- protects us from danger or harm
- rapid automatic response of the
nervous system
- Order of events
(use diagram
numbers)
- 1. A pin hurts (stimulus) a finger
- 2. A receptor detects the pin (stimulus)
- 3. The receptor sends electrical impulses to
the sensory neurone
- 4. At the end of the sensory neurone, the
electrical impulses are passed to the relay
neurone by chemicals diffusing through the
synapse
- 5. The chemicals cause electrical impulses to
be sent along the relay neurone
- 6. At the end of the relay neurone, the electrical impulses are
passed to the motor neurone by chemical diffusion through
the synapse
- 7. The chemicals cause electrical impulses to be sent
along the motor neurone
- 8. The motor neurone sends
electrical impulses to the effector
- 9. The muscle (effector) contracts and the
arm moves away from the pin (response).
- 9. The muscle (effector) contracts and the
arm moves away from the pin (response).
- 8. The motor neurone sends
electrical impulses to the effector
- 7. The chemicals cause electrical impulses to be sent
along the motor neurone
- 6. At the end of the relay neurone, the electrical impulses are
passed to the motor neurone by chemical diffusion through
the synapse
- 5. The chemicals cause electrical impulses to
be sent along the relay neurone
- 4. At the end of the sensory neurone, the
electrical impulses are passed to the relay
neurone by chemicals diffusing through the
synapse
- 3. The receptor sends electrical impulses to
the sensory neurone
- 2. A receptor detects the pin (stimulus)
- 1. A pin hurts (stimulus) a finger
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