Mechanical stimulation of a Mauthner neuron, in fish, results in a stereotyped escape response. Within milliseconds, contraction of particular trunk muscles and other muscles in the fin, jaw and operculum, cause an abrupt body turn away from the stimulus, positioning the fish to accelerate away. This behaviour is an example of a
A) rhythmically generated pattern modified by conscious input.
B) consciously generated pattern modified by a rhythmic pattern generator.
C) monosynaptic reflex.
D) polysynaptic reflex.
E) response to adrenaline release.

Question

Quizplus · Accepted Answer

The Mauthner neuron-induced escape response in fish involves multiple synapses between the sensory input and the motor output, including interneurons, making it a polysynaptic reflex. This complex pathway allows for the integration of various inputs and the coordination of a rapid and complex motor response, unlike a monosynaptic reflex, which involves a direct connection between a sensory and a motor neuron.

Mechanical Stimulation of a Mauthner Neuron, in Fish, Results in a Stereotyped