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Lecture 1 (Central Nervous System (cerebrum, cerebellum, brain stem, brain…
Lecture 1
Central Nervous System
cerebrum
cerebellum
brain stem
brain and spinal cord
dura mater
pia mater
arachnoid mater
subarachnoid mater
Cells of nervous system
neuroglia
provide support insulation and nutrients
phagocytize microbes
neurons
carry nerve impulses
nucleus lies in cell body
dendrites and axons extend from the cell body
synapse
facilitates signal transfer to postsynaptic cell
junstion at the terminal ends of axon
neurotransmitter
stops the activity
may be either stimulatory or inhibitory
Structures of nervous system
made up of nerves that transfer commands from CNS ro muscles and glands
cranial nerves extend from brain through holes in crainal bones
Sensory, motor, and mixed nerves
CSF
lumbar puncture, needle inserted between 2 vertebraes
fluid leaks into the subarachnoid space and will circulate and bathe the organs of the CNS
bacterial disease
meninginitis
lumbar puncture will showcase CSF to be milky in apprearance
sometime you will see petechiae in skin
Causes of meningitis
Neisseria meningitidis
Streptococcus pneumoniae
Haemophilus influenzae
Listeria monocytogenes
Streptococcus agalactiae