chapter 15 information Flashcards
what are the 3 parts of a neuron
axon
dendrites
cell body
what are the axons job?
carry impulses from the body to the brain
what are the dendrites job?
carry impulses to the body from the brain
cell boy includes what “organelle”
the nucles of the neuron
what covers the neuron
myelin sheath
what are neuroglia?
what are the 4 diff types?
cells that support neurons and binds to other neurons
astrocytes
oligodendrocytes
microglia
ependyma
astrocytes function
provide a blood brain barrier
oligodendrocytes function
develop the myelin on axons
microglia function
phagocytic function, they appear during infection
ependyma function
ciliated cells that line fluid filled cavities
2 diff parts of the nervous system include
peripheral nerv system
central nerv system
brains function in nerv system
center for thought and emotion, sensory and coordination
spinal cords function in nerv system
pathway for transmission of impulses from brain to the body
the central nerv system includes what structures?
brain
spinal cord
what is the cerebrum
uppermost portion of the brain
incl 5 lobes: frontal, parietal, temporal, occipital and insula
functions incl: sensory, language, movement and memory
what is the cerebellum
functionsinclude movement and balance
what is the diencephalon
made of the hypothalamus and the thalamus
thalamus gets all of the sensory to process them
hypothalamus gets all involuntary movements
what are the 3 structures of the brainstem
midbrain
medulla
pons
wheres medulla located
attaches to spinal cord
wheres the midbrain located
separates cerebrum from brain stem
wheres the pons located
the ‘bridge’ connects midbrain to the medulla
the peripheral nervous system includes what structures
spinal and cranial nerves
what are the 2 systems of the peripheral nervous system
somatic
autonomic
within the autonomic system, what are the 2 other systems
sympathetic ‘fight or flight’
parasympathetic ‘rest and digest’
