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.
Correct Answer:

Verified
Correct Answer:
Verified
Q27: Which of the following are examples of
Q28: A neuron that engages in spatial summation
Q29: Which of the following is not part
Q30: At myelinated areas of the axon (i.e.between
Q31: Nerve impulses are electrical signals measured across
Q33: When a neuron is not firing,the sodium-potassium
Q34: Which ion channel is primarily responsible for
Q35: K<sup>+</sup> channels in the heart do not
Q36: The spinal cord is enclosed by the
Q37: Place the following events involved in drug