The strength of a stimulus is coded by the ____
a. strength of action potentials
b. frequency of action potentials
c. duration of the resting period
d. duration of the refractory periods
e. frequency of salutatory periods
b
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The first heart sound heard during the cardiac cycle is associated with ________
A) opening of the AV valves B) closure of the AV valves C) closure of the semilunar valves D) opening of the semilunar valves
A ________ is a display of the chromosomes of a somatic cell during metaphase of mitosis.
A. locus B. karyotype C. genome D. gamete
What is the responsibility of the sodium/potassium pump?
A. Reestablish and maintain resting membrane potential. B. Prepare the neuron for another nerve impulse. C. Pump sodium out of the cell using active transport. D. All of these are correct.
The region of the brain responsible for predicting the consequence of events or actions is the
A) prefrontal cerebral cortex. B) occipital association cortex. C) reticular formation. D) temporal lobe. E) premotor cortex.