| A | B |
|---|
| Receptors | an end organ or a group of end organs of sensory or afferent neurons, specialized to be sensitive to stimulating agents, as touch or heat |
| Stimuli | an action that produces a response or reaction |
| Chemoreceptor | a receptor stimulated by chemical means |
| Photoreceptor | a receptor stimulated by light |
| Thermoreceptor | a receptor stimulated by changes in temperature |
| Reflex | an automatic response; a response that is inborn and involuntary |
| Auditory | pertaining to hearing, to the sense of hearing, or to the organs of hearing |
| Visual | perceptible by the sense of sight |
| Oral | uttered by the mouth; spoken |
| Scent | to perceive or recognize by or as if by the sense of smell |
| Neuron | a nerve cell |
| Neurotransmitter | a chemical released by a neuron to transmit a signal across a synapse |
| Nervous System | the organ system that receives and interprets stimuli and transmits the appropriate response to the affected system |
| Touch | to put the hand, finger, etc., on or into contact with (something) to feel it |
| Homeostasis | the ability or tendency of an organism or cell to maintain internal equilibrium by adjusting its physiological processes |
