Transcribed Image Text: 20. The presence of cholinesterase in the human nervous system allows a. One way impulse transmission b. More rapid impulse conduction c. Arecovery period by destroying acetylcholine

Transcribed Image Text: 20. The presence of cholinesterase in the human nervous system allows
a. One way impulse transmission
b. More rapid impulse conduction
c. Arecovery period by destroying acetylcholine
d. Acetylcholine to continue stimulating dendrites
21. The threshold of a neuron refers to
a. The polarity of 0.07 mV
b. The minimum stimulus required to achieve depolarization
c. The stimulus needed to achieve equal concentrations of sodium ions and potassium
ions within the neuron
d. The stimulus needed to achieve sodium ion equilibrium between the cytoplasm and
extracellular fluid (ECF)

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