What is one characteristic of sensory receptors?
a. Sensory receptors consist of the endings of efferent neurons.
b. Sensory receptors detect changes in the external or internal environment.
c. Several sensory organs make up a sensory receptor.
d. Sensory receptors produce small amounts of energy on a continual basis.
e. Sensory receptors detect changes in the external but not the internal environment
b
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