Spine Flashcards
The spinal cord extends from which structure?
Medulla
At what level does the spinal cord terminate?
L1/L2
What information is received by the dorsal horns of grey matter?
Somatosensory
What is contained within the ventral horns of grey matter?
Motor neurones
At what levels is the lateral horn of grey matter found?
T1-L2
What is contained within the lateral horn of grey matter?
Autonomic neurones
What are the main ascending tracts of the spinal cord?
Dorsal column medial lemniscus (DCML)
Spinothalamic
What sensory modalities are carried within the DCML pathway?
Fine touch
Pressure
Vibration
DCML fibres from below T6 travel up the spinal cord in what?
Fasciculus gracilis
DCML fibres from T6 and above travel up the spinal cord in what?
Fasciculus cuneatus
Where do first order DCML fibres synapse?
Medulla
The DCML fibres decussate to which structures?
Contralateral medial lemniscus
After decussating to the contralateral medial lemniscus, what happens?
The fibres synapse in the thalamus before signal is relayed to the somatosensory cortex
What sensory modalities are carried within the spinothalamic tract?
Pain
Temperature
Where do the first order neurones of the spinothalamic tract synapse?
Dorsal horn
The spinothalamic fibres decussate after synapsing in the dorsal horn. True/false?
True
Where do the second order neurones of the spinothalamic tract synapse?
Thalamus
What is the function of the spinocerebellar pathways?
Provide unconscious proprioceptive information to cerebellum
The dorsal spinocerebellar pathway carries proprioceptive information from where?
Muscle spindles of lower limbs
The cuneocerebellar pathway carries proprioceptive information from where?
Upper limbs
The ventral spinocerebellar pathway carries proprioceptive information from where?
Golgi tendons of lower limbs
The spinocerebellar tracts transmit information to the ipsi-/contra-lateral cerebellum
Ipsilateral