Chapter 20-Nervous System Flashcards
(46 cards)
blood brain barrier
Blood vessels around the brain composed of endothelial cells packed so tightly that nothing can pass
axenic
devoid of microorganisms
bacterial meningitis
inflammation of the meninges
bacterial meningitis most common causative agents
Neisseria mengitidis, Streptococcus pneumoniae, Haemophilus influenzae, Listeria monocytogenes, Streptococcus agalactiae
Neisseria mengitidis
scariest causative agent of bacterial meningitis, there is a vaccine for this, acquire from inhalation
Streptococcus pneumoniae
causative agent of bacterial meningitis, acquired by inhalation, there is a vaccine
Haemophilus influenzae
causative agent of bacterial meningitis, acquired by inhalation, there is a vaccine
Listeria monocytogenes
causative agent of bacterial meningitis, acquired by contaminated food
Streptococcus agalactiae
causative agent of bacterial meningitis, acquired during birth
bacteremia
bacteria in the blood
Signs and symptoms of bacterial meningitis
fever (sign) and stiff neck (symptom)
treatment of bacterial meningitis
vaccines and antibiotics
Meningoencephalitis
chews up brain, caused by protozoans and amoebas
Naegleria fowleri
causative agent of meningoencephalitis, enters through nasal mucosa
Acanthamoeba
causative agent of meningoencephalitis, enters through conjunctiva and broken skin
Leprosy (Hansen’s Disease) types
tuberculoid and lepromatous
Tuberculoid type of leprosy
does not spread, numb lesions on skin
lepromatous type of leprosy
spreads, destructive deformities
Leprosy causative agent
Mycobacterium leprae
Mycobacterium leprae
causative agent of leprosy, Gram + bacillus, very slow growing, armadillo food pads, takes 20 years to show up for both types
Leprosy
infects peripheral nerves, skin cells; prefers outer extremities
signs and symptoms of leprosy
numbness, numb patches on skin
Botulism
paralysis, affects nervous system, prevents muscle contraction
Causative agent of botulism
Clostridium botulinum
