Why Are Mammalian Reflexes So Fast? (Check All That Apply

question 32

Multiple Choice

Why are mammalian reflexes so fast? (Check all that apply.)

• A)They use neurons with extra-wide axons.
• B)They complete the sensory input-to-motor output circuit in only 2-3 neurons.
• C)They do not send signals to the brain and back.
• D)They activate a large number of sensory neurons,which speeds things up after the motor neuron performs spatial summation.
• E)There was a selective advantage to evolve rapid responses to certain types of stimuli.

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