Nervous tissue Flashcards
cable-like bundle of nerve fibers
nerves
transmit information along the axons
nerves
a low protein liquid
endoneurial fluid
protective sheath covering nerve fascicles
perineurium
glycoprotein-polysaccharide covering
glycocalyx
a layer of connective tissue that surrounds axons
endoneurium
small bundle of nerve fibers
fascicles
outermost layer of dense
epineurium
conduct sensory information
sensory nerves
conducts signals from the cns
motor nerves
supports and protect the neurons
neuroglia
prevents neurons from touching each other
neuroglia
form myelin sheaths in CNS
oligodendrocytes
lines internal cavities of the brain
ependymal cells
small, wandering macrophages formed white blood cell called monocytes
microglia
most abundant glial cell in CNS
astrocytes
envelope nerve fibers in PNS
schwann cells
surrounds the neurosomas in ganglia of the PNS
satellite cells
2 type of neuroglial cells in the PNS
schwann and satellite cells
4 types of neuroglial cells in the CNS
oligodendrocytes, ependymal, microglia, astrocytes
masses of rapidly dividing cells
tumors
brain tumors arise from
meninges
blood-brain barrier
gliomas
an insulating layer around a nerve fiber
myelin sheath
production of myelin sheath
myelination
oligodendrocytes and myelin sheaths in the CNS deteriorate
multiple sclerosis
a hereditary disorder of infants
tay-sachs disease
