referred
pain
proprioceptive
sensations
muscle
spindles
tendon
organs
joint
kinesthetic receptors
primary
somatosensory area (postcentral gyrus)
sensory
signals from L body go to R cerebrum & vice versa
relative
size of regions within primary somatosensory area
are proportional to the number
of sensory receptors / body part
primary
motor area (precentral gyrus)
relative
size of regions within primary motor area
are proportional to the number
of motor units / muscle in the body part
somatic
sensory pathways
first order neuron
second order neuron
third order neuron
somatic
motor pathways
upper motor neuron (UMN)
lower motor neuron (LMN)
I WONT ASK
YOU ANYTHING ABOUT THE FOLLOWING SPECIFIC SENSORY OR MOTOR PATHWAYS
posterior column
fine touch,
stereognosis, conscious proprioception, kinesthesia, weight discrimination,
vibration
lateral spinothalamic
pain, thermal
sensations
anterior spinothalamic
tickle, itch,
pressure, crude touch
anterior & posterior spinocerebellar
proprioception
lateral corticospinal
from motor cortex to skeletal
muscle moves limbs, hands, feet
anterior corticospinal
from motor cortex to skeletal
muscle moves axial skeleton
corticobulbar
from motor
cortex to skeletal muscle moves head, neck