We continued with the 'warming up'. We addressed the tentorial herniation. The
15 important questions on We continued with the 'warming up'. We addressed the tentorial herniation. The
What can occur with a subdural hematoma?
- Subdural hematoma
- Midline
How is pupil dilation achieved?
- Pupil dilation
- Sympathetic nervous system
What might occur during a subdural haematoma?
- It pushes against the tentorial notch.
- This can compress the oculomotor nerve.
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What is the clinical outcome when the uncus presses against the oculomotor nerve?
- Managed by the superior oblique and lateral rectus muscles.
What muscles control the position of the eye affected by oculomotor nerve dysfunction?
- Innervated by CN IV and CN VI.
- Oculomotor nerve affects other eye muscles.
What is a visible sign of oculomotor nerve suppression?
- Pupil constriction is affected.
- Dilation involves the sympathetic nervous system.
How is the corticospinal tract divided?
- Lateral corticospinal: 85% for fine motor.
- Anterior corticospinal: 15% for gross motor.
What is the role of the anterior corticospinal tract?
- Belongs to descending medial motor pathways.
What does the corticobulbar tract descend from?
- Passes through the internal capsule.
- Innervates motor nuclei of cranial nerves.
What is unique about the facial nerve's innervation?
- Lower part has only contralateral innervation.
- Facial nerve is CN VII.
What happens during a subdural haematoma?
What part of the brain is affected when the uncus is pushed?
Where does the oculomotor nerve exit the brainstem?
What are the two divisions of the corticospinal tract?
How is CN VII innervation different from other cranial nerves?
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