HUBS1403 Chapter Notes - Chapter 12: Lamellar Corpuscle, Bulbous Corpuscle, Receptive Field
24 Jun 2018
School
Department
Course
Professor
SENSORY NERVOUS SYSTEM
.sensory processing
°stimulation of sensory receptor
°transduction of the stimulus
°transmission of sensory signal
°integration and perception of sensory signal
•general senses .special senses
°pain °taste
°temperature °smell
°touch °vision
°pressure °hearing
°vibration °equilibrium
°proprioception
•
sensory receptors are differentiated on the bias of :
°receptor 's 'labelled line
'
connection to CNS
°receptor specificity
°receptor structure
°receptive field
°receptor 's adaptation profile
.Mechanoreceptors are composed of pacinian corpuscles ,Ruffini 's endings ,Meissner 's
corpuscles ,Merkel 's disks
.Receptive fields -two point discrimination determined by size of receptive field
and number of receptors
°small -many receptors ,fine spatial discrimination
°long -few receptors ,poor spatial discrimination
"slowly adapting -
'tonic 'Irespond continuously to constant stimulus )
•rapidly
adapting -
'
phasic
'(respond only to stimulus onset and offset )
•posterior column tracts (thalamus ):fine touch ,pressure ,vibration ,proprioception ;cross in
Medulla
.spinothalmic tracts :crude touch and pressure (anterior tract ),pain ,temperature (lateral
tract );cross in cord at entry level
.spin cerebella rtracts :pro prioception ;either does not cross or crosses twice
Document Summary
Sensory nervous system sensory processing of stimulation sensory receptor transduction of the stimulus transmission of sensory and perception signal of integration senses general. Pain temperature touch pressure vibration proprioception sensory special signal senses taste smell vision hearing. Equilibrium sensory receptors are differentiated on the bias of : receptor "s labelled line connection to. Cns receptor specificity receptor receptive structure field receptor. Mechanoreceptors are composed of pacinian corpuscles , ruffini. Receptive fields - and number of receptors disks two point discrimination determined by size of receptive field spinothalmic tracts crude touch and pressure ( anterior tract.
