The somatosensory system Flashcards
Cutaneous senses involve the perception of ______ and _______ from stimulation of the ______
touch, pain, skin
proprioception is the ability to sense the _______ of the _________
position, body and limbs
kinesthesis is the ability to sense ______ of the body and limbs
movement
One adaptive value of the cutaneous system is:
monitoring damage to the body, coordinating movements and actions, protection of organs
the dermis contains ________ that respond to stimuli
mechanoreceptors
Merkel receptors fire ________ while stimulus is present and are responsible for sensing _______
continuously, fine details
Meissner corpuscles fire ____________ and are responsible for controlling _________
only when a stimulus is first applied and when it is removed, hand grip
Ruffini cylinders fire _______ and are associated with the ________ of the skin
continuously, stretching
Pacinian corpuscles fire __________ and are associated with sensing ___________ and __________
when the stimulus is first applied and when it is removed, rapid vibration, fine texture
what are the two major pathways from skin to cortex?
medial lemniscal and spinothalamic
the two point threshold refers to:
the minimum separation between two points to perceive them as being separate/distinct
body areas with high acuity have _____________ of cortical tissue devoted to them
larger areas
Nociceptive pain is activation of the _________ in the skin, which signal __________
nociceptors, impending damage
the gate control model of pain involves three signals processed in the _______ of the spinal cord
dorsal horn
mechanoreceptors carry information about ____________ stimuli
non painful, tactile based
