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Discover the natural reflexes that make you salivate over food and your pupils dilate in bright light.Key facts
- Our bodies detect changes in the environment automatically and react according to common reflex arcs.
- Common reflex arcs include: salivation, contraction, dilation and blinking of the eyes.
- Reflex arcs are the simplest neural pathways.
- Reflex arcs consist of a sensory receptor sending a signal via a neuron to the spinal cord, which reacts with a motor neuron message.
Transcript
Our bodies need to detect changes in the environment and react accordingly
When you do this without thinking it's called a reflex or a reflex arc
Common reflexes include...
Salivation – mouth waters on smelling your favourite food
Contraction – muscles withdraw on touching a hot object
Dilation – pupils widen in …
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