Group work S1-4 Flashcards
Which structures detect muscle stretch when tendon hammer applied
Stretch receptor
Which spinal level illicit knee jerk
L3
What is Jacksonian march
e.g. seizure starts in left hand and moved proximally through upper limb-
Follows topographical homunculus of brain, signal ‘marches’ along motor cortex lateral to medial
Opposite side of brain
Where is this tumour and what weighting is the image
T1 because CSF black, tumour in frontal lobe. Meningeal tumour- probably dura
What does a contrast enhancing lesion mean
tumour disrupted BBB
What is ataxia
loss of coordination
What is Aphasia
decreased language and spee4chb
Akinesia
absences of movement
Dysarthria
unclear speech
Chorea
abnormal involuntary movement
Why is maternal alpha fetoprotein raised in maternal blood in neural tube defects
Leaks out into amniotic fluid if severe defect in CNS
Why is dietary history important for inflammation of spinal cord
Vit B12 deficiency- comes from meat, required for CNS (alcoholics too)
Megaloblastic anaemia
Bilateral symptoms of spinothalamic system suggests
Syrinx- lesion in ventral white commissure where they cross, susceptible to damage
Why are there no signs below level in syrinx
only impacts decussation, not spinothalamic tract
why does someone with albinism find it hard to see in bright light
no pigmented layer, XS glare
