neuroglia Flashcards
what is the function of neuroglia ?
support, insulate, and nourish neurons
what percent of the brain does neuroglia take up ?
over 1/2
what is neuroglia also called ?
glial cells
does neuroglia send electrical messages ?
no
what cell anchors neurons to capillaries ?
astrocytes
what prevents many substances from entering the CNS ?
blood- brain barrier (BBB)
what can pass through the BBB ?
nutrient molecules (glucose or amino acids)
what provides structural support and helps regulate the concentrations of nutrients and ions within a cell ?
astrocytes
why do astrocytes form scar tissue ?
when there’s injury in the CNS
what cells support neurons ?
microglial
what type of cell is microglial ?
phagoctye
what cells make myelin around axons of the PNS ?
schwann cells
what cells produce insulating layers of myelin around axons in the CNS ?
oligodendrocytes
what causes brain tumors called glicoma ?
rapidly dividing neurological cells
what happens if a glicoma grows large ?
they may impair normal brain function
