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Summary anatomy
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Summary of 4 pages for the course Medicine at UOM (anatomy)
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What type of nerve fibres are organised in tracts?Ones with common origins, terminations and functions
Where would you find intersegmental fibres?
The narrow band immediately peripheral to the grey matter
What is the function of intersegmental fibres?
Interconnect cord segments to mediate intersegmental coordination
What is the region occupied by the intersegmental fibres known as?
Fasciculus proprius
Where are the dorsal columns located?
Between dorsal median sulcus and dorsal horn
What type of sensation is carried by the dorsal columns?
Proprioception and discriminative touch
What dorsal column carries information from the lower limbs?
Fasciculus gracilis
What dorsal columns carry fibres from the upper limbs?
Fasciculus cuneatus
Where do the dorsal columns decussate?
Medulla
Where does the fasciculus cuneatus terminate?
Nucleus cuneatus
Where does the fasciculus gracilis terminate?
Nucleus gracilis
What do the 2nd order neurons of the dorsal columns ascend as?
Medial lemniscus
Where do the 2nd order neurons of the dorsal columns terminate?
VP nucleus of thalamus
What do the third order neurons of the dorsal columns do?
Project to somatosensory cortex
Where does the spinothalamic tract lie?
Lateral and ventral to ventral horn of grey matter
What type of sensations does the spinothalamic tract carry?
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