Miscellaneous Flashcards
(20 cards)
What are features of normal pressure hydrocephalus?
gait instability
urinary incontinence
dementia
Where is CSf produced?
ependymal cells in the chorid plexus of th ventricles
WHat layers of the brain does the CSF sit between ?
arachnoid and pia mater
How does CSF pass from the lateral to the third ventricle?
foramen of munro
What does CSF pass through to get to the fourth ventricle
Aqueduct of Sylvius
How does CSF reach the subarachnoid space and spinal cord?
foramen of Magendie and foramen of lushka
what reabsorbs the CSF into the vascular system?
arachnoid villi
WHat are the main differnces between CSF and plasma?
Higher pCO2 so lower pH (7.33, 7.41 for plasma)
Protein lower
GLucose lower
Chloride and Mg higher
Cholesterol low
Calcium and K lower
Sodium same
Which hormones increase appetite?
neuropeptide Y
Ghrelin
Which hormones reduce appetite
leptin
Cholecystokinine
Which area produces a non-fluent aphasia?
Give the numbers
Broca’s area
44-45
Where is brocas area and what is its function
Frontal lobe
Responsible for language production
Which area produces a fluent aphasia?
Give the number
Wernicke 22
Trouble comprehending speech
What lobe is wernickes area found
temporal
Damage to which area produces a conduction aphasia?
arcuate fasciculus which connects Wernicke to Brocas
What is conduction aphasia?
Difficulty repeating words, phrases or sentences
Intact comprehension and fluent speech production
What artery supplies brocas area?
superior part of MCA
What artery supplies wernickes?
inferior part of MCA
What is the Hebbian theory?
Synaptic connections between neurons strengthen when neurons involved fire simultaneously and repeatedly
