Chapter 16 Flashcards
Nervous system structures that detect stimuli to provide information about internal and external environments
Sensory receptors
Convert stimulus energy into electrical energy
Transducers
Contain channels that open in response to stimuli other than neurotransmitters or voltage change
Modality gated channels
Stimulus we are conscious of
Sensation
Form of stimulus
Modality
What is modality determined by?
Area of brain signal is sent, route of transmission
Detect chemicals
Chemoreceptors
What are chemoreceptors used for?
Gustation, olfaction, concentration of molecules in internal fluids
Respond to distortion in plasma membrane
Mechanoreceptor
What are mechanoreceptors used for?
Touch, pressure, vibration, proprioception, equilibrium, stretch of organs
Detects change in temperature
Thermoreceptors
Where are thermoreceptors located?
Skin, hypothalamus
Light receptors in retina of the eye
Photoreceptors
What are the 2 types of photoreceptors?
Rods and cones
Dim-light and peripheral vision receptors
Rods
Color receptors
Cones
Respond to pain
Nocioceptors
Where on the body or environment the stimulus is originating
Location
Area of single neurons detection
Receptive field
Smaller receptive field = ____ precise the perception
More
How strong the stimulus is
Intensity
How long stimulus is present
Duration
Slow/limited adaptation
Tonic
What are some examples of tonic receptors?
Pain, light, proprioception
