# Bio 2 - Exam 1 (Ch. 44) Questions

All sensory input arrives at the central nervous system in the same form, as ____________ propagated by afferent neurons. Perception of the type and intensity of a stimulus depends on which part of the brain the impulse projects to and the firing frequency of the sensory neuron.
A. action potentials
B. receptor potentials
C. reflexes
D. frequency localizations
E. thresholds
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All sensory input arrives at the central nervous system in the same form, as ____________ propagated by afferent neurons. Perception of the type and intensity of a stimulus depends on which part of the brain the impulse projects to and the firing frequency of the sensory neuron.
A. action potentials
B. receptor potentials
C. reflexes
D. frequency localizations
E. thresholds
Which is NOT a stimulus that the simplest sensory receptors, free nerve endings, will respond to?
A. bending of the sensory neuron membrane
B. changes in temperature
C. changes in the oxygen content of the extracellular fluid
D. release of odorants from freshly baked bread
E. stretching of the sensory neuron membrane