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40 Cards in this Set

  • Front
  • Back
meningeal layer cover (3)
brain, spinal cord, central portion of cranial nerves
meninges compose of 3 membranes
- dura mater
- arachnoid mater
- pia mater
2 parts of dura mater
- endosteal layer
- meningeal layer
real dura mater
meningeal layer
meningeal layer cover
type of membrane of meningeal layer
strong fibrous membrane
type of membrane of arachnoid
delicate, impermeable membrane (spinal web)
what are in subarachnoid space
- cerebral arteries
- veins
- cranial nerves
type of membrane of pia mater
vascular membrane
meningeal layer form wat to divide cranial cavity into 3 compartments
3 compartment in cranial cavity
left hem, right hem, cerebellum/brainstem
infolding of dura form additional space, occupied by
venous sinuses
function ofsepra with movement ofhead
restrict displacement of brain associate with movement of head
inflammation of meninges, cause by viral or bacterial in subarachnoid space
most common side effect of meningitis that is permanent
sensory neural hearing loss (bilateral, mild to profound, flat or high freq)
what hearing disease coexisting or precedin meningitis
otitis media
ventricular system
network of fluid filled cavities in the brain and spinal cord
what fluid filled cavities in brain and spinal cord
cerebrospinal fluid (CSF)
3 ventricles
- lateral (c shape)
- third
- fourth (tent shape)
where is lateral ventricles
--> one in each cerebral hemisphere
third ventricle
cleft between left and right halves ofthalamus
location fourth ventricle
space between third and central canal of spinal cord
what connect between 3rd and 4th
cerebral aqueduct of sylvius
central canal of spinal cord extend from and to ?
from inferior medulla oblongata to terminal ventricle in the conus medularis of spinalcord
CSF ciculate thru
1 ventricles
2 subarachnoid space
where is CSF created
choroid plexuses of lateral, third, and fouth ventricles
CSF is absorbed into
venous sinuses trhough arachnoid granulations
lipid soluble substances (alcohol) enter brain by
diffusion of CSF into brain substance
3 functions of cns
1 protect CNS from mechanical trauma
2 regulate intracranial pressure
3 remove waste products and have nutritive function
an abnormalincrease in CSF within skull
what are 2 cause for CSF pressure to rise
1. blocked circulation of CSF at cerebral aqueduct called congenital aqueductal stenosis
2. overproduction of CSF (choroid plexuses) / diminished absorption of CSF (arachnoid granulation)
what is a symptom of newborns with hydrocephalus
enlarged headbecause skull is not closed
how to treat hydrocephalus
with shunts or selective destruction of choroid plexus
CSF color
pink - presence of blood
yellow- increase protein content (tumor)
cloudy or white - increase WBC (infection such as meningitis)
contracoup injury
severe or repeaed blows to head
result from severe or repeated blows to head
1 cushioning by septa and CSF are overcome --> bain make contact with opposite side of skull
2. produce intracanial hemorrphage
result from repeated blows to front of head
- damge to posterior occipital and cerebellar lead to
1 ataxia
2 dysarthria
3 partial blindness
lack of coordination of muscles of artic, speech
lack of coordination of limbs
what type of damage is more common in premature infants
intraventricular hemorrphage