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11 Cards in this Set
- Front
- Back
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Receptors
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transform stimuli into electrical nerve impulses.
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Sensory neurons
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relay a nerve impulse to the central nervous system
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Relay neurons
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transmit nerve impulses within the central nervous system
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Motor Neurons
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receive nerve impulses from the central nervous system and relays the signal to an effector
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Effector
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Muscles or glands that produce a response to the stimulus.
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Synapses
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The junctions between two nerve cells. Transmission of these signals require chemical neurotransmitters
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Diversity of stimuli that can be detected by human sensory receptors.
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Structure of the human eye
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Compare rod and cone cells
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Structure of the ear
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Perception of sound
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○ Sound travels as pressure waves in the air which push the membrane of the eardrum causing it to vibrate
○ The bones of the middle ear are pushed by the eardrum which magnifies the vibrations 20 times ○ Fluid is then displaced in the cochlea. ○ Activation of hair cells triggers a nerve impulse which is transmitted via the auditory nerve to the brain |
