Ch 16 General Sensation Flashcards
6 general senses
touch, pressure, stretch, heat, cold, pain
Reception definition
sensory receptors detect a change in stimulus
Transduction definition
sensory receptor detects an arriving stimulus and converts it into an action potential that can be sent to the central nervous system
Sensation definition
arrival of sensory information at the central nervous system
Perception definition
conscious awareness of a sensation
What four types of information do sensory receptors transmit?
modality, location, intensity, duration
Modality definition
type of stimulus based on type of receptor
Location definition
receptive fields
Intensity definition
frequency of action potential and number of neurons
Duration definition
fast or quick adapting
Receptive field definition
area monitored by single receptor cell
Phasic receptors definition
perception of stimulus disappears quickly
Tonic receptors definition
slowly adapting receptors
How are receptors classified?
distribution, structure, origin of stimulus, modality
Exteroreceptors function
detects external stimuli
Interoreceptors function
detects internal environment
Proprioceptors function
detects body position, movement, and equilibrium
Receptor types by modality
nociceptors and thermoreceptors
Nociceptors definition
pain receptors
Thermoreceptors definition
responds to changes in temperature
