Dorsal column system
of spinal cord
Receptors for body movement, limb positions,
fine touch discrimination, and pressure
Afferent neuron from pain or temperature receptor
(a) The anterolateral system. (b) The dorsal column system. Information carried over collaterals to the reticular formation in (a) and (b)
contribute to alertness and arousal mechanisms.
If an accident severed the left half of a person’s spinal cord at the mid-thoracic level but left the right side intact, what pattern of sensory
deﬁ cits would occur?
Answer can be found at end of chapter.