Ascending (sensory) pathways

Posterior column pathway carries which stimulus

sensory: fine touch, vibration, proprioception

Posterior column pathway

start and end point

does it decussate

s: sensory receptors in skin/muscles

e:somatosensory cortex

yes decussates in medulla

Spinothalamic pathway contains which 2 subpathways and type of stimulus

lateral spinothalamic tract

anterior spinothalamic tract

pain, tem, crude touch 

lateral spinothalamic tract

type of stimulus

start

end

decussate?

pain and temp 

s: free nerve endings in skin and deeper tissues

e: somatosensory cortex

yes thru anterior white commisure

anterior spinothalamic tract

type of stimulus

start

end

decussate?

crude touch and pressure

s: tactile receptors in skin 

e: somatosensory cortex 

yes thru anterior white commisure

Where do posterior column pathway, the lateral spinothalamic and anterior spinothalamic all end and what is the significance

all end at somatosensory cortex therefore they are all conscious

Spinocerebellar pathway conscious or unconsious 

unconsious

branches of spinocerebellar pathway

anterior tract

posterior tract

anterior spinocerebellar tract

stimulus

strat 

end 

decussate?

unconscious proprioceptive info

s';golgi tendon organs

end; cerebellum 

decussate at anterior white commisure 

posterior spinocerebellar tract

stimulus

strat 

end 

decussate?

unconscious proprioceptive info from the lower body and trunk 

s'; tactile receptors in skin 

e; cerebellum 

no decussation!!