touch Flashcards
(10 cards)
what are the skin receptors
meissner’s corpuscles
pancinian corpuscles
merkel’s disks
Ruffini corpuscles
what does touch mean
ability to detect and interpret stimuli that makes contact with skin
what do the messner’s corpuscles detect
pressure
low frequency vibrations
what do the pancinian corpuscles detect
transient pressure
high frequency vibrations
what do the Merkel’s disks detect
light pressure
what do the Ruffini corpuscles detect
stretches
what is the somatosensory cortex
processes touch information
has a defined area for each body part, but some areas are larger than others - hands, face, lips
what does the somatosensory cortex do
measures:
touch, temperature, pain
awareness of body
location of bodily senses
judging pressure + weight
object recognition with touch
storing sensory info
what is pain
a warning signal from the brain that something is wrong
how is pain detected
sensory neurons and nociceptors respond to impact
nociceptors attune to stimuli and send damage info to CNS