The biceps relax and the triceps contract when raising the fore arm.
- The biceps tendon contract if the biceps reflex is stimulated by the tap on the brachioradialis.
What is a reflex?
- A reflex or reflex action is an involuntary, unplanned sequence or action and nearly instantaneous movement in response to a stimulus.
- An action consisting of comparatively simple segments of behavior that usually occur as direct and immediate responses to particular stimuli uniquely correlated with them
What is an involuntary action?
- Actions which take place without consciousness or willingness of an individual are called the involuntary action.
- Digestion, heart beating, sneezing etc are few examples of involuntary actions.
- Both involuntary and voluntary actions are controlled by the same parts of the brain.
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