Test 2 Flashcards
Primary Somatosensory Cortex in
post central gyrus
Noncioceptors
receptors that respond to stimuli - tissue damage, pose threat, and inflammation.
nerve fibers carrying pain and temperature info send their axons to enter
dorsal horns of the spinal cord
anterolateral system
carries pain and temp info to the brain
Substance P boosts
pain signals
Mice laking substance P
cant feel intense pain, but only mild.
Pain info integrated in
cingulate cortex (emotional vs sensory pain aspects)
brain region that activates when we emphasize with a loved one experiencing pain
cingulate cortex
A Delta fibers are ______ C fibers are _______
myelinated, unmyelinated
Neuropathic pain
Pain that persists long after an injury. Neurons still signal pain and amplify a pain response.
opiates bind to brain to
reduce pain
opiate antagonist
narcan
Descending analgesia circuit brain shuts down
pain
pain info enters via ____ and synapses on ________
dorsal root, dorsal horn
Glutamate tells us that
pain happened
Substance p tells us
pain intensity
opiates inhibit the activity of
inhibitory neurons in the PAG
descending analgesia pathway is
activated by opiates and surpresses pain transmission
Muscle antagonists
counteracts the effect of another muscle
Muscle synergists
muscles that act together
triceps and biceps are
antagonists
Neuromuscular junction
where motor neuron terminal meets itstarget muscle fiber.
Action potential by motor neuron triggers _____ release
AcH
spinal motor neurons send their axons out the
ventral roots to the periphary
