Thalamus Flashcards
Where does the spinal cord terminate?
Cauda equina begins at L2 and the Filum Terminale anchors the cord to prevent movement.
Describe the path of pain fibres in rexids laminae?
Free nerve ending in periphery and unmyelinated fibre
cell body found in dorsal root ganglion
Synapses in nucles I (posteromarginal nucleus) or II (substantia gelatinosus).
normally info passes across the ventral white commissure to the ventral funiculus to head to the brain.
under extreme conditions a withdrawl of polysynaptic reflex occurs with fibres is the IX lateral motor colu
difference between laminae 1 and 2
receptors for pain modulation? dusty in laminar 1
Laminar 2 lot of opiod receptors
cut vs burn(diffucult to control)
discriminative info
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cuneate and gracile facsiclsus distribution
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area 5+6
visceral input from abdomen/inner organ
area 7
sympathetic input
Dorsal nucleus or Clark?
cerebellum
balance and maintain co-ordinated movements
8 and 9
LMN
myotactic
activate muscle based on the activation of another muscle
change in body position based on input from muscles
brain gets told after the fact
flexor vs sensors?
Flexors more dorsal and extensors more ventral
distal more lateral and proximal more medially
how to tell orientation of spinal cord?
Posterior median sulcus
ventral median fissure
Polysynaptic reflex
.
Divisions of the butterfly?
…….
Convergence?
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