Herewith some comments belonging to the medial motor systems and the somatosensory
25 important questions on Herewith some comments belonging to the medial motor systems and the somatosensory
Where does the rubrospinal tract originate?
- Originates in the midbrain
- Associated with the red nucleus
At which levels are the vestibulospinal and reticulospinal tracts located?
- Origin in the pons and medulla
- Located at a lower level
What happens to the rubrospinal tract and vestibulospinal tracts in case of lesions above their level?
- They remain intact
- Not affected by the lesions
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How does the posterior column ascend in the spinal cord?
- Located at the back side
- Contains gracile and cuneate fascicles
Where does the posterior column terminate?
- Ends in the somatosensory cortex
- Located in the parietal lobe
Where does the spinothalamic tract project?
- Projects to the thalamus
- Connects to the parietal lobe or prefrontal cortex
What does the neospinothalamic tract localize?
- Localization and nature of pain
- Types include pricking and dull
What is the paleospinothalamic tract associated with?
- Involved in suffering from pain
- Seeks medical help
What belongs to the extrapyramidal system and is crucial for muscle tone, posture, and balance?
- Muscles tone
- Posture
- Balance
Where does the origin of the rubrospinal tract lie?
What happens in case of an infarction of the middle cerebral artery (MCA)?
What explains the typical hemiparesis/hemiplegia observed?
What role does the rubrospinal tract play in body movement?
What are the two ascending sensory systems mentioned?
What happens to the posterior column at the caudal medulla?
What is the final target of the posterior column?
What are the three parts of the anterolateral pathway?
- Spinoreticular tract
- Spinomesencephalic tract
- Spinothalamic tract
Where does the spinoreticular tract project?
Which tract is crucial for the localization and nature of pain?
How are the neospinothalamic and paleospinothalamic tracts categorized?
- Lateral pain system
- Medial pain system
Where do A-delta, C, and A-beta fibres meet?
- Location of projection cells
- Afferent nerve fibres
Which type of fibre has the highest transmission speed?
- Thin myelinated
- Thick myelinated
What might happen when rubbing over a painful area?
- Gate control theory
- Incoming pain stimuli
Where do most A-beta fibres ascend?
- Largest part of A-beta
- Sensory pathways
At which lamina levels do some A-beta fibres enter the dorsal horn?
- Join A-delta and C fibres
- Dorsal horn layers
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