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Flexion reflex in the frog HTML5


This virtual experiment activity allows the placement of the main structures that initiate a reflex response along with the determination of the direction of the nerve impulse from the sensory organ to the effector organ.

Click in the zoom's active zones to electrically stimulate the nerves.

Learning goals

  • To understand the role of each structure involved in the reflex response.
  • To determine the direction of a nerve impulse propagation.

Learn more

A reflex is an involuntary response to stimuli. The flexion (or withdrawal) reflex in the frog is a medullary reflex characterized by a motor response observed after mechanical or electrical…

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