Term
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Definition
Motor cortex -->
internal capsule -->
crus cerebri -->
70% decussation in med. pyramids --> Lower Motor Neurons
Precise motor control/initiation |
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Term
|
Definition
Motor cortex -->
Internal capsule -->
Crus Cerebri -->
Decussation right before targets -->
Motor regions in CN5, 7, 9, 10, 11, 12
Note: Decussation is partial. Bilateral innervation. |
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Term
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Definition
Red Nucleus -->
Decussation in ventral tegmentum -->
Descend through lateral tegmentum -->
Ventral horn (lower motor neurons)
Extrapyramidal component of voluntary motor control. |
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Term
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Definition
Vestibular nuclei origin
Lateral tract innervates ipsilateral
Medial tract innervates contralateral
Synapses in ventral horn |
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Term
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Definition
Superior colliculus -->
Decussates in dorsal tegmentum -->
Synapses on ventral horn motor neurons
Coordinates head/neck and eye movements. |
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Term
| Pontine reticulospinal tract |
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Definition
Also called Medial RST.
Excites anti-gravity extensor muscles. Modulates autonomic movement, also sleep.
Ipsilateral. |
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Term
| Medullary reticulospinal tract |
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Definition
Also called Lateral RST.
Controls flexor muscles.
Ipsilateral. |
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