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5 Cards in this Set
- Front
- Back
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Flow 1-3 |
a. desire to move
b. initiating/planning of voluntary mvmt (ass. corticies) c. refinement of motor plans, integrating sensory info (basal ganglia, cerebellum) |
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Flow 4-6 |
a. further refinement using sensory info (thalamus)
b. issuing final motor command, input from pma & sma, umn starts here (primary motor cortex) c. direct, desc. motor pathway (pyramidal system tract) |
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Flow 7-9 |
a. brainstem/spinal cord, lmn starts from 2nd order neuron, umn can also start from brainstem if extra-pyramidal
b. cranial or spinal nerves c. muscles (the lmn goes all the way down here) |
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Pyramidal System |
a. origin- primary motor cortex
b. # of connections- not a lot, direct c. destination- brainstem, spinal cord d. function- carry impulses for fine motor mvmt |
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*****
Extrapyramidal System |
a. origin- brainstem or cortex
b. # of connection- more than one, indirect c. destination- brainstem, spinal cord d. function- carry impulses for musc tone for fine motor mvmt |
