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Chapter 16 part 1

Horizontales
Ion, pH, gas levels
Conducts and amplifies sound
Perception of sound energy, intensity, or amplitude of the vibration Expressed in decibels (dB), prolonged exposure to 90 dB or more can be damaging
External stimuli
Our sense of whether a sound is "high" or "low" - Determined by vibration frequency, measured in hertz(Hz) or cycles/second human hearing range is 20 to 20,000 Hz
Overall any sensory receptor is conversion of stimulus energy(light, heat, touch, sound, etc.) into nerve signals
Pressure, stretch, vibration
Conversion of one form of energy to another
Body postion and movement
Directs sound down the auditory canal
Verticales
Small local electrical change on a receptor cell brought about by a stimulus -Results in release of neurotransmitter or action potentials that generate nerve signals to the CNS
Internal stimuli
Temperature
Nerve tissue surrounded by other tissues that enhance resonse to a certain type of stimulus
A subjective awareness of the stimulus Most sensory signals delivered to the CNS produce no conscious sensation
Structure specialized to detect a stimulus
Light
Any audible vibration of molecules A vibrating object pushes on air molecules which then pushes on other air molecules and the air molecules hits the eardrum causing it to vibrate
Funnel for conducting vibrations to the tympanic membrane(eardrum)