NB7-2 - Touch and DLAs Flashcards
How is the neurological examination of proprioception done?
- Have patient close their eyes
- Stabilize a joint in the body
- With two fingers at either side of the body part, flex and/or extend it at the stabilized joint
- Ask patient in which direction the body part was moved
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C
List the major components of the homunculus and where they’re located within the gyrus.
What are stereognosis and graphesthesia?
- Stereognosis is the ability to tell what an object is by feeling it
- Graphesthesia is the ability to know the number (or anything really) that a person has traced on your body.
How can a persons higher sensory cortical activity be assessed?
By testing for stereognosis and graphesthesia. These abilities require more than just a functioning post-central gyrus.
List the divisions and functions of the internal capsule.
- Posterior limb - neurons carrying sensory imformation to postcentral gyrus
- Anterior limb - neurons from frontal cortex to pons and neurons from thalamus to frontal lobe
- Genu (area where limbs meet) - neurons from cortex to spine
Which artery supplies the internal capsule?
MCA
Picture where the spinothalamic tracts and medial lemnisci are located in the medulla, pons, and midbrain.
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What is Tabes Dorsalis and what are its symptoms?
Tabes dorsalis is a syphilitic myelophathy (a demyelinating disease caused by a syphilis infection) that has its strongest affects in the dorsal root and cloumn. Its most prominent symptoms are ipsilateral paresthesia and/or reduced touch sensation in a dermatomal pattern. Other symptoms include gait disturbances (diminished proprioception), diminished patellar reflex, and/or short shooting pain.
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