Motor shit Flashcards
name of direct projects to spinal cord
corticospinal
name of indirect projects to spinal cord
corticobulbar
where is movement initiated
basal ganglia
what regulates movement
the cerebellum
where does the info from the cerebellum go
the motor cortex
what occurs when there are lesions on the basal ganglia
akinesia
what occurs when there are lesions on the cerebellum
dyskinesia
what level of control involves the motor cortex
middle
what level of control involves the cerebellum and basal nuclei
highest
what is the lowest level of motor control
spinal cord
what is akenisa
not being able to make movements
what is dyskenisia
no good fine movements
what side of the brain is the brocas area on
left normally
what two neurons are involved in motor pathways
upper and lower
where is the upper motor neuron
in the motor cortex
what is the lower motor neuron
spinal motor neuron or a cranial nerve motor neuron
what does the word corticobulbar mean
cortex to the brain stem
the direct pathway regulates what kind of movements
fast and fine (skilled)
lesions in the white matter of the brain or spinal cord will lead to what and why (2 whats)
paralysis because you lose innervation of the true motor neuron
enhancement of the spinal reflex
damage to the lower motor neuron will result in
lower neuron paralysis
no spinal reflexes
where would a cut be for paraplegia
between T1 and L1
where would a cut be for quadriplegia
in the cervical region
what is damaged in flaccid paralysis
ventral root or anterior horn cells
what is damaged in spastic paralysis
upper motor neurons of primary motor cortex
what type of paralysis has no voluntary or involuntary muscle control
flaccid
what type of paralysis has the spinal neurons remaining intact
spastic
what type of paralysis has muscles stimulated irregularly
spastic
what type of system controls neck head and eye movements
indirect
what system would you use to play the piano
direct
what system would you use to move a piano
indirect
where do all indirect pathways end
ventral horn
what are the 4 kinds of indirect pathways
tectospinal
vestibulospinal
rubrospinal
reticulospinal
what are the two kinds of direct pathways
lateral corticospinal
ventral cortiocospinal
what are the most prominent descending tracts
corticospinal
what are the two kinds of corticospinal tracts
lateral
ventral
what are the two kinds of reticulospinal tracts
medial
lateral
