chapter 17 study questions Flashcards
brain and spinal cord
CNS components
nerves emanating from brain and spinal cord
PNS components
match functions sensory, integrative, motor with peripheral nerves muscles and glands CNS
sensory = peripheral nerves integrative = central nervous system motor = muscles and glands
clear serum like fluid that provides nutrition for the CNS and liquid cushion
CSF
list defenses of brain and spinal cord
phagocytic microglia and macrophages lower levels of MHC expression skull and vertebrae CSF blood-brain barrier meninges
NOT:
enhanced phagocytic activity
enhanced complement levels
rapid inflammatory response (remember: CNS is immune privileged)
the term _____ refers to a partial or different immune response in the CNS, eyes, and uterus
immune privilege
the normal biota of CNS and PNS includes
there is no normal biota in the NS
the _______ nervous system is an immunologically privileged site
central
which type of organism causes the most serious type of meningitis?
bacteria
bacterial entrance to the nervous system is often a result of coinfection or previous infection of viruses affecting the ______
resp system
to obtain a sample of CSF in suspected cases of meningitis, what is usually performed?
spinal tap/lumbar puncture
which of the following are typical signs and sx of most cases of meningitis?
increased WBC in CSF increased neutrophils in blood diarrhea fever headache resp paralysis
increased WBC in CSF
fever
headache
*also stiff/sore neck
meningitis can manifest as ______ or ______
chronic or acute
a gram-neg diplococcus that causes 15-20% of cases of meningitis is
Neisseria meningitidis