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11 Cards in this Set
- Front
- Back
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What do fasciculations indicate?
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Deinervation, often occurs in conjuction with atrophy.
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Sx of S1 nerve root radiculopathy?
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pain in the lower back/buttock region, radiating down the back of the thigh to the lateral foot.
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When are deep tendon reflexes lost?
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When there is damage to the sensory fibres from the tendon stretch organs
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Loss of pinprick sensation dermatomes between 1st and 2nd toe = which nerve?
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L5, peroneal
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What are the signs optically of increased ICP?
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- blurring of the optic disc (cupping) and swelling
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How do the sympathetic fibres that are involved in Horner's supply the different areas (i.e. pupil, sweating and eyelid?)
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Sympathetic fibres exit at T1, synapse at superior cervical ganglion then become post ganglionic fibres along the surface of the common carotid & internal carotid then travel along opthalmic artery to the eye. the sympathetic nerves which travel to the forehead travel with the external carotid.
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Given the anatomical passage of the sympathetic nerves, what does it mean if there is no anhydrosis?
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Only the internal carotid nerves are affect. Painful Horner's like syndrome w/o anhydrosis = carotid artery dissection
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Why does Horner's only cause a partial ptosis?
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Because sympathetics supply 2dry accessory muscle, whereas CNIII supplies levator palabrae hence causes total ptosis.
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Gliomas
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affect brain hemispheres
neuroepithelial in origin associated with NFM spread by direct extension |
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Astrocytomas
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Subtype of glioma, arise from astrocytes
Grade I - grows slowly over several years IV - death within several months |
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OIigodendrogliomas
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grow slowly over several decades; calcification is common
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