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What is the importance of Neuroglia ?
Structural and functional support of neurons
Provides oxygen and nutrients to neurons
Direct communication between sensory and motor neuron
interneuron facilitates sensory-motor communication.
Gray matter consists of
Neuron cell bodies
White matter consists of
myelinated axons connecting different parts of grey matter.
Three layer of meninges
Creates cerebral spinal fluid
Choroid Plexuses (ependymal cells)
The circle of willis is
a ring of arteries that supply the brain
common source of strokes
What is a tight junction
restrict passage of all but certain material through the blood brain barrier.
at interface between blood and brain, endothelial cells and astrocytes are stiched together by tight junctions
Causes of dementia
Misc endocrine disorders, b-12 deficiency
importance of substiantia nigra,
Death of dopamine secreting neurons in this area is the cause of parkinsons
located in midbrain.
importance of lewy bodies
destinqushing feature in PD, Lewy bodies found in affected neurons.
they damage mitocondria. and caus