BI-1446
Specialised cells
Biology · Secondary 4 · Hard · Specialised cells
A person steps on a drawing pin and quickly lifts his foot before feeling pain. Which statement correctly compares this spinal reflex action with a voluntary action, such as choosing to kick a ball?
- Both reflex and voluntary actions are always rapid responses to a stimulus.
- A reflex action is rapid, while a voluntary action may be slower and is started in the brain.
- A reflex action is started in the brain, while a voluntary action is started in the spinal cord.
- Only voluntary actions involve muscles as effectors.
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