Major Ascending (sensory) Pathways and Tracts Flashcards Preview

Nervous system - anatomy > Major Ascending (sensory) Pathways and Tracts > Flashcards

Flashcards in Major Ascending (sensory) Pathways and Tracts Deck (5):
1

Spinothalamic anterior

-consicous sensation
-crude touch, pressure
first order synapse in dorsal root of spinal column
-decussation happens with second order neuron in spinal column
-second order synapses on ventral nuclei of thalamus-third order neurons synapse in primary sensory cortex

2

Spinothalamic lateral


-consicous sensation
-pain, temperature
-first order synapse in dorsal root of spinal column
-decussation happens with second order neuron in spinal column
-second order synapses on ventral nuclei of thalamus
-third order neurons synapse in primary sensory cortex

3

Posterior column


-consicous sensation
-fine touch, pressure, vibration, proprioreception
-first order synapses at the medulla
-decussates at the medulla
-second order synapses in thalamus
-third order synapses with primary sensory cortex

4

Spinocerebellar posterior


-subconscious sensation
-proprioceptive info about position of skeletal muscles, tendons and joints
-NO decussation
second order synapse at cerebellum
-NO 3rd order

5

Spinocerebellar anterior


-subconscious sensation
-proprioceptive info about position of skeletal muscles, tendons and joints
-DECUSSATION
-second order (interneurons) synapse at cerebellum
-NO 3rd order