Neural Tissue Flashcards
two cell types of neural tissue
neurons and neuroglia
How do neuroglia differ from neurons?
group of cells, do NOT generate nerve impulses
sensitivity to stimuli result in nerve impulses/action potentials which are then sent to neurons, muscle fibers, or glands
function of nervous tissue, located in nervous tissue
neuron (function)
initiate and transmit action potentials which lead to muscle contraction or glandular secretions
components of neurons
dendrites, cell body/soma, axon, and synaptic terminals
projections that are in environment and pick up signals; collect messages
dendrites
where nucleus and other organelles are located
cell body/soma
electrical signals propogates in only one direction
axon
what is the myelin sheath
wraps around and insulates axon
end part of neuron, allow for communication to next cell
synaptic terminals
neuroglia
support neuron physically and metabolicly
4 types of CNS glial cells
oligodendrocytes, astrocytes, ependymal, microglial
Function of oligodendrocytes
wrap around axon of neuron and form myelin
2 types of PNS (neural tissue not in brain and spinal cord) glial cells
Schwann and satellite
function of schwann
wrap around axon to form myelin
