Summary: Comments Voor Midtherm

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• 1 1 Some fundamental issues. Most white matter (myelin) is located subcortical. As an

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• What are the ascending pathways from the reticular formation crucial for?

  Arousal
  

  • Project to the thalamus
  • Project to basal forebrain

• Which brain areas are involved in gross motor functions?

  Basal ganglia and cerebellum
  

  • Control posture
  • Regulate muscle tone

• What does the posterior part of the brain process?

  Sensory information
  

  • Includes auditory and visual
  • Involves primary, secondary, tertiary areas

• Where are the tertiary regions of sensory processing located?

  TPJ or STS
  - Close to each other

• What area does sensory information transmit to next after tertiary regions?

  Prefrontal cortex
  

  • Followed by premotor area
  • Then primary motor cortex

• Which area is the origin of the corticospinal tract?

  Primary motor area
  - Also originates from the parietal lobe

• What are the three main arteries of the brain?

  MCA, ACA, PCA
  - MCA accounts for 70% strokes

• Which artery affects arm/hand function more than the leg in strokes?

  Middle cerebral artery (MCA)
  - Leg receives blood from ACA

• 2 2 We continued with the 'warming up'. We addressed the tentorial herniation. The

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• What happens if the uncus is pushed over the tentorial notch?

  It can press against the oculomotor nerve, affecting eye movement.

• What happens to the oculomotor nerve with pressure?

  The nerve ceases to function, affecting eye movements.