The viscosity of a crude oil affects our ability to pump it out of the ground; the viscosity and volatility of a fuel affect how easy it is to atomize in the fuel injector; the viscosity of a lubricant affects its ability to protect an engine.
ramus (plural rami) ( 1 biology) A branching, as of nerves or blood vessels. ( 2 ornithology) The stem of a barb of a feather, from which the barbules extend. ( 3 anatomy) A bony projection, particularly of the jaw, but also in the groin area, both subject to the maturing process of symphysis.
The rami of the autonomic nervous system are the axons of pre-ganglionic and ganglionic fibers. Most of the axons of pre-ganglionic fibers are myelinated. Their cell bodies are found in the gray matter of the brain stem and spinal cord. Their axons synapse with neurons within the two ganglionic chains.