Sensory receptors Flashcards
(11 cards)
Each type of receptors is highly sensitive to one type of stimulus for which it is designed and yet is almost nonresponsive to other types of sensory stimuli
Differential sensitivity
Change in the membrane electrical potential of a receptor caused by a stimulus
Receptor potential
Impulse distorts the viscoelastic structure of the Pacinian corpuscle and this is transmitted to the same side of the central nerve fiber
Readjustment in structure
Specificity of nerve fibers for transmitting only one modality of sensation
Labeled line principle
Progressive “inactivation” of the sodium channels in the nerve fibers membrane
Electrical accomodation
Continuous stimulus strength and is slow adapting receptor
Tonic receptors
Change in stimulus strength (predictive function). Rapid adapting receptor
Rate receptors/ movement receptor/ phasic receptors
Increasing signal strength is transmitted by using progressively greater numbers of fibers
Spatial summation
Increasing the frequency of nerve impulses in each fiber
Temporal summation
It has its own special organization that causes it to process signals in its own unique wat
Neuronal pools